Sub Plans That Survive the Day

By Kagan Aydogan · Published 29 July 2026 · 5 min read

You will not be writing your best sub plans on the morning you need them. You will be writing them at six a.m. with a temperature, or not at all. The work that makes cover days go well happens weeks earlier, in a folder you prepare once and top up occasionally — and in a class that already knows what to do when you are not there.

Build the folder before you need it

The single highest-value thing you can do is assemble one physical folder, kept somewhere a colleague can find it without you, containing everything a stranger would need to run your room for a day. Tell your head of department or a neighbouring teacher exactly where it lives. A brilliant plan emailed at 7:40am to an address nobody checks is worth less than a mediocre one already sitting on the shelf.

Assume the substitute has never met your class, does not teach your subject, and has been given the room fifteen minutes before the first lesson. Everything below follows from that assumption.

What goes in it

• A current seating chart with names. This is the most useful single page in the folder and the one most often missing. A substitute who can use a student's name has an entirely different day from one who cannot. Print it, keep it current, and mark which way the chart faces relative to the board. A seating chart maker makes reprinting after a reshuffle a two-minute job rather than a chore you skip.
• The timetable. Which class, when, where, and how long. Include break and lunch times, duty commitments, and anything that happens on a particular day only.
• The routines the class already knows. Half a page, no more: how students enter, your attention signal, how they ask for help, how they pack away, how they are dismissed. A substitute who uses your existing attention signal will get an immediate response, because the class is already trained to it. One who invents a new one starts from zero.
• The essentials that are not optional. Medical needs, allergies, students with access arrangements or specific plans, and anything safeguarding-related that a covering adult must know. Keep this factual, minimal and appropriate to share.
• Two named humans. "If you need anything, Ms Okafor is in room 14 and Mr Bell is next door." Substitutes are frequently reluctant to leave a room to find help; naming someone nearby removes the hesitation.
• Where things are. Whiteboard pens, spare paper, the projector remote, the login. Small frictions consume a disproportionate amount of a cover teacher's goodwill.

Work that actually holds up

The most common sub plan failure is leaving work that depends on the teacher. If a task needs subject expertise to explain, equipment to set up, or knowledge of who is working at what level, it will not happen — the substitute will improvise something quieter, and you will lose the lesson anyway.

Leave consolidation, not new content:

• Practice of something already taught. Students can start without an explanation, and you get useful information about who has retained what.
• Structured reading with comprehension questions. Self-contained, quiet, and genuinely valuable if the text is chosen well rather than grabbed at random.
• Writing with a clear prompt and visible success criteria. Give the criteria on the sheet so the substitute never has to adjudicate what a good answer looks like.
• Review and retrieval tasks. Low-preparation, high-value, and hard to get wrong.

Two practical rules. First, over-provide: leave more than a class can finish, because a class that runs out of work fifteen minutes early will find something else to do. Second, always include one "if there is time left" task — a challenge question, an extension, a short piece of independent reading — so the last ten minutes have a designated purpose.

Timing is the other thing cover lessons get wrong, in both directions. Say roughly how long each part should take, and note that a visible countdown on the board is the easiest way for a substitute to hold a class to it without negotiating. Our guide to timers and transitions covers why this works.

Prepare the class, not just the paperwork

This is the part most sub-plan advice omits entirely, and it does more than any folder.

Teach your class, explicitly and in advance, what happens when someone else is in the room. Do it as a normal routine alongside the others you rehearse in the first two weeks: the same expectations apply, the same signals are used, and the work left is real work that will be looked at.

Two specific moves that repay the effort:

• Appoint two named helpers per class. Not the highest-attaining students — the most reliable ones. Their job is to tell the substitute where things are and how the room normally runs. Write their names in the folder. It gives the cover teacher an ally within the first two minutes.
• Close the loop, visibly. Ask for a note on what happened and who helped or hindered, and make clear beforehand that you will read it. Then follow up on both sides when you return — thanking the students who made it easy matters at least as much as addressing the ones who did not. If you run a behaviour chart or a reward board, recognising the class for a good cover day is exactly the kind of specific, earned recognition that our guide to positive reinforcement argues for.

A class that knows the report will be read and acted on behaves substantially better than one that suspects a cover day is consequence-free. That expectation is set long before you are ill.

The half-hour that saves the day

Set aside thirty minutes at the start of a term. Print a seating chart per class, write the half-page of routines, photocopy two generic lessons per subject, name your helpers, and put it all in one folder somewhere findable. Top it up when your seating changes.

You will not think about it again until the morning you wake up unable to teach — and on that morning, the only thing you will have to do is send one email saying where the folder is.

Written by Kagan Aydogan

I'm a student and developer, not a classroom teacher — I build the free tools on this site. I write these guides by reading the classroom-management literature, and by taking feedback from the teachers who email me about what actually happens in their rooms. If something here doesn't match your experience, tell me and I'll fix it.

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