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This is the plain-language version. Same content, written for a quick read.
The frame. Substitute teachers (subs) are pros doing a hard job under hard conditions. Many walk into rooms they don't know, with students they don't know, asked to teach lessons someone else built. Your job as the para is to be the steady piece that makes their day workable and keeps your students from losing ground. Done well, sub days can be productive and even pleasant; done badly, they can wreck a week.
Most sub-day problems come from not being ready. The work happens before the sub gets there, ideally weeks ahead, though some subs are last-minute.
Most well-run classrooms have a sub folder. If yours doesn't, building it is the teacher's job -- offer to help put it together. It usually includes:
Brief the sub. Don't assume they know anything. Specifically:
This is the main skill of sub days. The sub is the teacher today; you are support. But you also know things they don't, and you are the steady piece. Balancing these is the work.
Students react to subs in different ways. Some do great; some struggle. Knowing this helps.
One of the biggest costs of sub days is loss of fidelity: programs not run the way they were built, accommodations skipped, BIPs not run. Your role is to keep fidelity for the students you support. ("Fidelity" means running the plan the way it was written.)
How you and the sub work together matters. Some patterns:
Sometimes the teacher is out for a long time: illness, family leave, leave of absence. Long-term subs are different from one-day subs.
Sometimes subs aren't qualified for the room they're in. This is a structural problem; here's how to handle it.
Sub days call for some documentation.
Some longer-term work to make sub days work better.
| Try this | Watch out for |
|---|---|
| Brief the sub well at start of day | Assume they know things they don't |
| Stay in your lane: handle what you normally handle | Take over the teacher role |
| Keep IEP and BIP fidelity even if the sub doesn't know them | Let your students' programs fall apart on sub days |
| Address sub-driven issues quietly when you can | Correct or undermine the sub in front of students |
| Keep your usual data collection | Skip data because it's a sub day |
| Document big issues for the regular teacher and admin | Pretend the day was normal when it wasn't |
| Treat subs as pros: they are often nervous | Treat subs with talk-down or hostility |
| Build sub binders and systems before they're needed | Wing it every sub day from scratch |
| Tell admin if the sub is really failing or hurting students | Put up with bad sub behavior in silence |
| Allow recovery time after sub days: they are often more tiring | Push through sub-day tiredness and burn yourself out |
You get to school and learn the regular teacher is out without warning. The sub is new and looks nervous.
Welcome them warmly. Walk through the schedule. Brief them on key student info: focus on what they need to know to handle the day, not everything. Decide what you'll handle (your students' specific needs, behavior support) vs. what they'll handle (the lesson, broad classroom management). Stay close all day. Document anything notable. At the end of the day, give them a kind summary: they'll be more confident next time.
The sub today seems to think they don't need your help. They are brushing off your info about students.
Stay pro. Don't escalate in front of students. Quietly: "I'm just sharing what's worked for these students because their plans need specific things." If the sub keeps brushing it off, focus on what you can do: run IEPs and BIPs yourself, support your students' programs. Document the pattern. Tell admin or the supervising teacher about the issue. Brief 13.05 (When You See Something Wrong) covers escalation.
Your student is escalating. The sub is doing it wrong: raising voice, ultimatum, no de-escalation.
Step in to take over the behavior support, kindly. "Mrs. Ahmadi, let me help with this: I know his plan." Run the BIP. De-escalate as you were trained. Don't argue with the sub in front of the student. Once it's resolved, brief the sub: "His plan is X; here's what works." Document. If the situation was unsafe, tell admin. Brief 05.10 (Escalation Cycle) and 05.11 (Crisis Response). (05.10 is in expert review, not published yet and 05.11 is no longer published)
Six weeks into a long-term sub stretch, you notice the sub is doing things differently than the regular teacher: lessons, classroom management, even some IEP work.
Be diplomatic but real. "I want to flag I've noticed some shifts. Here's what was happening before [teacher] left, just to keep things consistent for the students." If the sub doesn't adjust, bring it to admin. The regular teacher's program should keep going during their absence as much as possible. Document. Brief 16.04 (When the Para Is Out) covers fidelity issues from the other side.
The sub is making sarcastic comments about students, including comments about their disabilities.
This is wrong on more than one level. Address it right away if you can do it safely: "Mrs. Ahmadi, can we talk over here for a sec? Those comments aren't appropriate." If they don't adjust, tell admin during the day. Document exactly. This may warrant a formal complaint and the sub being taken off the rotation. Brief 13.05 (When You See Something Wrong) and 13.06 (Scope of Practice). Don't tolerate this: your students' dignity is at stake. ("Scope of practice" means the work you are trained and authorized to do.)
The sub turned out to be great: engaged with students, ran the lessons well, asked good questions.
Tell them. "You did a great job today: the kids really responded to you." Tell admin. Some districts have ways to flag preferred subs. Strong subs are valuable; pushing them to come back helps future days. End-of-day handoff for the regular teacher should note: "Mrs. Ahmadi was great, would be great to see her again."
Sub days are part of school life. Done well, they are days that move along, students learn, programs run with reasonable fidelity, and everyone goes home tired but okay. Done badly, they are days students remember as chaos, programs lose ground, and the regular teacher comes back to picked-up pieces.
As a para, you are often the steady piece that makes the difference. The sub is teaching today, but you know the students, you carry the IEPs and BIPs, you keep the relationships and routines that make the room work. That role is real work. Brief well, support without overstepping, keep fidelity for your students, document what matters, and recover after. Build sub-binders and systems before they're needed. The pattern of your sub-day work over time builds the kind of practical skill that makes you valuable to your team and students.
Bottom line. Brief subs well at start of day. Stay in your lane while supporting. Keep IEP and BIP fidelity. Address issues quietly when you can. Document big issues. Treat subs as pros: they are often nervous. Build systems (sub binders) before they're needed. Tell admin if the sub is really failing or hurting students. Allow recovery time. The steady piece you provide is part of what makes the school work.
Quick guidance, fidelity, communication, and how to keep the day on track
For paraprofessionals working alongside substitute teachers
Why this brief
Substitute days are some of the most variable in the school year. Some subs are seasoned veterans who know your students; some are new graduates filling in for the first time; some are warm bodies hired through an agency to cover the day. Sub days can go beautifully (students engage, lessons happen, the day flows) or terribly: students dysregulate, fidelity collapses, mistakes ripple into next week. The difference is often whether the para and sub coordinate effectively, the para has done the prep work, and the team has built systems for sub days.
This brief covers the practical version: how to brief a sub at the start of the day, how to support without overstepping, how to manage your students' specific needs when their main teacher is out, and what to do when sub days go sideways. Brief 16.04 (When the Para Is Out) covers the reverse situation; this one is when the teacher is out and the sub is in.
Who this brief is for
Paras whose supervising teacher is out
Paras working in classrooms with frequent substitute coverage
Paras supporting students whose IEPs or BIPs require specific implementation
Paras new to handling sub days
Supervising teachers and admins building sub-day systems
Before sub days happen
Most sub-day issues trace to lack of preparation. The work happens before the sub arrives, ideally weeks in advance, though some subs are last-minute.
Sub binder or folder
Most well-organized classrooms have a sub folder. If yours doesn't, building it is the teacher's to own -- offer to help put it together. It typically includes:
Daily schedule
Class roster with relevant notes
Building map and key locations (bathrooms, nurse, office)
Emergency procedures
Specific student information (per the student's plan and confidentiality)
Behavior expectations and key strategies
Names of supporting staff (paras, related-service providers, admin)
Emergency contact information for admin, nurse, security
Specific to your students
Brief profile of each student you support, anonymized as appropriate
Triggers and helpful strategies
Specific accommodations the sub should provide
How the student communicates
Any medical considerations
Brief 13.01 (FERPA): confidential information should be in the sub binder under appropriate handling
Lesson plans
Subs typically receive lesson plans from the teacher
Plans should be detailed enough to follow without prior context
Backup activities for if plans don't work
If you know the sub is coming
Pre-meet briefly if possible: even 5 minutes helps enormously
Walk through the day
Highlight key student information
Identify what you'll handle vs. what the sub handles
If it's a surprise
Most sub days come with little notice
Have your prep work ready in advance so you can brief the sub on arrival
Don't expect to do briefings while also supporting students
The morning briefing
Brief the sub. Don't assume they know anything. Specifically:
First few minutes
Welcome them: they're often anxious about the day
Walk through the schedule briefly
Show them where things are (sub folder, materials, your station)
Point out other staff in the room (other paras, related-service providers expected)
Key student information
"This is Bradley: he uses an AAC device, brief instructions only, look for his thumbs-up signal that he's ready"
"Maya can't be on the same side of the room as Jasmine, there's a history"
"Aiden has a BIP; if he starts to escalate, the plan is X"
"Lisa needs sensory breaks every 30 minutes, I'll handle them"
Specific to students with significant disabilities, IEP requirements, or behavior considerations
Practical logistics
Bathroom procedure: when, who needs supervision, where the closest accessible bathroom is
Lunch: your role, sub's role, transitions
Specials / specials transitions
End-of-day routine
Bus or pickup procedures
Emergency information
How to call admin or nurse
Emergency procedures (fire, lockdown: brief 16.08, no longer published)
Specific medical situations (allergies, seizures, etc.)
First aid supplies and nurse
What you'll handle vs. what they'll handle
Establish division clearly: "You teach the lesson; I'll handle behavior support and individual accommodations"
Don't volunteer for everything: manage your own role
Don't usurp their teaching role: let them teach
Tone
Friendly and professional
Don't intimidate or condescend
They're often more nervous than you might think
They're more likely to be effective if they feel respected
During the day
Support without taking over
This is the central skill of sub days. The sub is the teacher today; you're support. But also, you know things they don't, and you're the continuity. Balancing these is the work.
Stay in your lane: handle what you'd normally handle
Don't run the lesson yourself
Quietly fill in gaps as needed
Reinforce the sub's authority with students
Address sub-driven errors gently and privately when possible
If the sub is struggling
Step closer: your physical presence stabilizes the room
Quietly suggest specific moves: "You might try X here"
Take on more of the behavior support if the lesson is unraveling
Don't take over the teaching unless safety requires
Notify admin if the sub is genuinely failing: this happens
Maintain your students' programs
Implement IEP accommodations even if the sub isn't
Run BIPs as written
Take data as usual
Keep the structure your students depend on
Watch for student stress about the change
Some students dysregulate when their teacher is out
Routine + your steady presence helps
Pre-warning when possible (brief 11.04 Routines and Transitions covers this)
Visual schedule reference
Brief check-ins with affected students throughout the day
Don't over-explain
Don't constantly correct the sub in front of students
Don't talk over them
Don't roll your eyes or signal disrespect
Save substantive feedback for end of day or admin
Quiet redirection
If the sub asks a student to do something that conflicts with the IEP, redirect quietly
"Mrs. Ahmadi, we usually do this for Bradley, could I take this part?"
Often a quick handoff resolves the issue
Student dynamics on sub days
Students react differently to subs. Some thrive; some struggle. Awareness helps.
Common patterns
Some students push limits with new adults: testing what's allowed
Some students dysregulate due to broken routine
Some students enjoy the change and engage well
Some students miss their teacher and grieve briefly
All of these are normal
Specific to students with disabilities
Students with autism often particularly affected by routine disruption
Students with anxiety may worry
Students with attachment issues may have stronger reactions
Students with regulation challenges may have harder time
Brief 11.04 (Routines and Transitions) covers the broader frame
What helps
Pre-warning when possible: "Tomorrow Mrs. Delacruz will be out; Mr. Ahmadi will be subbing"
Visual schedule referencing the sub day
Maintaining routines as much as possible: same morning meeting structure, same workflow
Your steady presence: students often look to you for cues
Brief acknowledgment of feelings: "It's a different day with Mr. Ahmadi here. We'll have a great day"
Behavior expectations
Same expectations as usual
Don't lower the bar because it's a sub day
Don't raise the bar because the sub doesn't know the kids
Consistent enforcement of class norms
Maintaining fidelity
One of the biggest costs of sub days is loss of fidelity: programs not run as designed, accommodations skipped, BIPs not implemented. Your role is keeping fidelity for the students you support.
IEP services
Services in the IEP must be provided
If the sub doesn't know about them, you implement
Document: was the service provided?
Brief 02.01 (IDEA), 02.05 (IEPs)
BIP implementation
Antecedent strategies
Reinforcement schedule
Crisis response if needed
Brief 05.03 (Reading and Running a BIP)
Specific medical needs
Medications administered on schedule (per district policy and brief 09.04, in expert review, not published yet)
Glucose monitoring
Seizure protocols
Brief 09 series
AAC and communication systems
AAC device used throughout the day
Modeling continues
Brief 10.02 (AAC Overview)
Data
Continue your data collection
Note context (sub day) when relevant
Brief 06.01 (Data Types Overview)
If the sub interferes with fidelity
Address quietly in the moment when possible
Document specifically afterward
Brief admin or supervising teacher about gaps
Don't simply accept failure of fidelity as inevitable on sub days
Sub-para dynamics
How you and the sub relate matters. Some patterns:
Good dynamics
Mutual professional respect
Clear division of roles
Coordination throughout the day
Handling difficulties together
End-of-day handoff
Difficult dynamics
Sub who treats para as subordinate or unwelcome
Sub who undermines para's role with students
Sub who refuses to listen to information about students
Sub who is incompetent and won't accept help
Handling difficult dynamics
Stay professional: don't escalate in front of students
Quiet conversation if possible
Document patterns
Notify admin if sub is genuinely problematic
Brief 13.05 (When You See Something Wrong) covers escalation
If the sub is problematic for students
Inappropriate language or behavior toward students
Failure to maintain safety
Discrimination or harassment
Document immediately and notify admin
This warrants formal report
If you're a sub yourself
Some paras sub for absent paras or absent teachers
Brief 16.04 (When the Para Is Out) covers this from the other angle
Bring same professionalism, same humility about the unfamiliar room
Long-term substitutes
Sometimes the teacher is out for an extended period: illness, family leave, leave of absence. Long-term subs are different from one-day subs.
More like the regular teacher
Often state-certified or working toward it
Often paid more
Have more responsibility
Build relationships with students
Take on more of the planning
Para's role
Continuity for students
Support the long-term sub in learning the students and program
Help maintain fidelity of IEPs and BIPs
Bridge to the regular teacher when they return
Long-term sub challenges
Sub may have own approach that conflicts with regular teacher's
Students sometimes resist the change
Programs can drift in absence of regular teacher's design
Communicating with the absent teacher
Sometimes appropriate to maintain communication
Sometimes the absent teacher prefers complete separation
Defer to admin and the absent teacher's preference
Maintaining the program
Brief 16.04 (When the Para Is Out): applies in reverse here
BIPs and IEPs continue
Push for stability and consistency
Document drift if it's happening
Sub quality issues
Sometimes subs aren't qualified for the room they're in. This is a structural problem; here's how to navigate.
Common quality issues
No special education background sub assigned to a self-contained classroom
Sub with no behavior management skills assigned to a behavior-intensive room
Sub who can't manage the basic logistics
Sub without language skills assigned to ELL-heavy classes
In the moment
Step up to bridge gaps
Don't take over the teacher role unless safety requires
Maintain your students' programs
Notify admin if the situation isn't workable
Pattern documentation
If sub quality is consistently poor in your school, that's a structural issue
Document specific instances
Bring patterns to admin and union
Brief 13.05 (When You See Something Wrong) covers escalation
Equity considerations
Specialized programs (SpEd, ELL) tend to get less-qualified subs nationally
This pattern is documented and warrants attention
Brief 15.01 (Disproportionality) covers related dynamics (in expert review, not published yet)
Documentation
Sub days warrant some documentation.
End-of-day notes for the regular teacher
How the day went generally
Anything noteworthy: incidents, accomplishments, concerns
Where the sub left things vs. where they should be
Note in your daily log
If issues occurred
Specific documentation
Notify admin if warranted
Brief 13.05 covers escalation
Students' data
Maintain your data
Note 'sub day' in the data so the team can interpret patterns
If the sub failed to implement IEP services
Specific documentation
Notify case manager and admin
This is a FAPE issue; brief 02.01 covers
Confidentiality
Same FERPA rules apply
Don't post about sub days on social media
Don't gossip about specific subs
End of day pickup
Brief the sub on what worked
"Today went well: students did great with the math activity"
Affirms what they did right
Helps them grow as subs
Note for the regular teacher
Quick summary of the day
Specific incidents or notes
Where the sub left things
Any action items for the teacher's return
Materials and space
Help return materials and classroom to expected state
Specific items the regular teacher will need on return
Note any supplies that ran out or got moved
Sub feedback (if appropriate)
Some districts have sub feedback forms: fill out honestly
Praise good work
Note significant concerns through proper channels
Decompression
Sub days are often more tiring than regular days
Allow yourself recovery time
Brief 14.02 (Setting Boundaries): don't keep working past contract because of sub-day complexity
Building team-level sub readiness
Some longer-term work to make sub days work better.
Sub binders
Build them with the supervising teacher
Update annually
Test by reviewing with someone unfamiliar with the room
Para-specific sub coverage
Brief 16.04 (When the Para Is Out) covers when YOU are the absent one
Some districts have specific paraprofessional substitutes; some don't
Subs covering paras face their own challenges
Frequent-sub planning
If your room has frequent subs, build more robust systems
Pre-printed visual schedules
Pre-prepared lesson backup activities
Standard intro letter for incoming subs
Sub culture
Some districts have strong sub-mentor cultures
Some have transient sub pools that turn over constantly
Build relationships with subs you see repeatedly
Welcome them; they're more likely to come back
Long-term equity push
Districts often invest more in sub training for some schools than others
Push for high-quality sub coverage for SpEd and high-need classrooms
Brief 15.01 (Disproportionality) overlaps (in expert review, not published yet)
Pitfalls
| Try this | Watch out for |
|---|---|
| Brief the sub thoroughly at start of day | Assume they know things they don't |
| Stay in your lane: handle what you normally handle | Take over the teacher role |
| Maintain IEP and BIP fidelity even if the sub doesn't know them | Let your students' programs collapse on sub days |
| Address sub-driven issues quietly when possible | Correct or undermine the sub publicly in front of students |
| Continue your usual data collection | Skip data because it's a sub day |
| Document significant issues for the regular teacher and admin | Pretend the day was normal when it wasn't |
| Treat subs professionally: they're often anxious | Treat subs with condescension or hostility |
| Build sub binders and systems before they're needed | Improvise every sub day from scratch |
| Notify admin if sub is genuinely failing or harming students | Endure problematic sub behavior silently |
| Allow recovery time after sub days: they're often more tiring | Push through sub-day fatigue and burn yourself out |
Scenarios
Scenario 1: A surprise sub on a hard day
You arrive at school and learn the regular teacher is out unexpectedly. The sub is new and looks anxious.
Welcome them warmly. Walk through the schedule. Brief them on key student information: focus on what they need to know to manage the day, not everything. Identify what you'll handle (your students' specific needs, behavior support) vs. what they'll handle (the lesson, broad classroom management). Stay close throughout the day. Document anything noteworthy. End of day, give them a kind summary: they'll be more confident next time.
Scenario 2: A sub who won't accept input
The sub assigned today seems to think they don't need your help. They're dismissing your information about students.
Stay professional. Don't escalate in front of students. Quietly: "I'm just sharing what's worked for these students because their plans require specific things." If the sub continues to dismiss, focus on what you can do: implement IEPs and BIPs yourself, support your students' programs. Document the pattern. Notify admin or supervising teacher about the issue. Brief 13.05 (When You See Something Wrong) covers escalation.
Scenario 3: A behavior incident the sub is mishandling
Your student is escalating. The sub is responding poorly: raising voice, ultimatum, no de-escalation.
Step in to take over the behavior support, kindly. "Mrs. Ahmadi, let me help with this: I know his plan." Implement the BIP. De-escalate per training. Don't argue with the sub in front of the student. Once resolved, brief the sub: "His plan is X; here's what works." Document. If the situation was unsafe, notify admin. Brief 05.10 (Escalation Cycle) and 05.11 (Crisis Response). (05.10 is in expert review, not published yet and 05.11 is no longer published)
Scenario 4: A long-term sub who's drifting from the regular teacher's program
Six weeks into a long-term sub coverage, you notice the sub is doing things differently than the regular teacher: lessons, classroom management, even some IEP implementation.
Diplomatic but real. "I want to flag I've noticed some shifts. Here's what was happening before \[teacher\] left, just to keep things consistent for the students." If the sub doesn't adjust, bring it to admin. The regular teacher's program should continue during their absence to the extent possible. Document. Brief 16.04 (When the Para Is Out) covers fidelity issues from the other angle.
Scenario 5: A sub who is inappropriate
The sub is making sarcastic comments about students, including comments about their disabilities.
This is wrong on multiple levels. Address immediately if you can do so safely: "Mrs. Ahmadi, can we talk over here for a sec? Those comments aren't appropriate." If they don't adjust, notify admin during the day. Document specifically. This may warrant a formal complaint and the sub being removed from rotation. Brief 13.05 (When You See Something Wrong) and 13.06 (Scope of Practice). Don't tolerate this: your students' dignity is at stake.
Scenario 6: A great sub day
The sub turned out to be excellent: engaged with students, ran the lessons well, asked good questions.
Tell them. "You did a great job today: the kids really responded to you." Tell admin. Some districts have ways to flag preferred subs. Strong subs are valuable; encouraging them to come back benefits future days. End-of-day handoff for the regular teacher should note: "Mrs. Ahmadi was excellent, would be great to see her again."
Closing thought
Sub days are part of school life. Done well, they're days that move along, students learn, programs run with reasonable fidelity, and everyone goes home tired but okay. Done poorly, they're days students remember as chaos, programs lose ground, and the regular teacher returns to picked-up pieces.
As a para, you're often the continuity that makes the difference. The sub is teaching today, but you know the students, you carry the IEPs and BIPs, you maintain the relationships and routines that make the room functional. That role is real work. Brief well, support without overstepping, maintain fidelity for your students, document what matters, and recover after. Build sub-binders and systems before they're needed. The pattern of your sub-day work over time builds the kind of practical skill that makes you valuable to your team and students.
Related briefs
02.01 IDEA Overview for Paras
02.05 IEPs: How to Read One
05.03 Reading and Running a BIP
05.10 Escalation Cycle and De-escalation (in expert review, not published yet)
05.11 Crisis Response (no longer published)
06.01 Data Types Overview
09.04 Medication Administration (in expert review, not published yet)
10.02 AAC Overview
11.04 Routines and Transitions
13.01 FERPA and Confidentiality
13.05 When You See Something Wrong
13.06 Scope of Practice
14.02 Setting Boundaries
15.01 Disproportionality in Special Education (in expert review, not published yet)
16.04 When the Para Is Out
16.08 Lockdown / Shelter / Evacuation (no longer published)
Reading is useful, but recall is where it sticks. Three short scenarios, low-stakes, no scoring. About 3 minutes. You can stop any time.
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