Sick Today? Here's How to Build a Reliever Lesson Plan in 10 Minutes With AI

You wake up sick. Or your kid does. Either way, you've got twenty minutes before someone needs a plan a reliever can actually run — no context, no clarification questions, no chance to check in with you. Most teachers either scramble through old files for something "close enough," or leave a bare instruction like "watch this video" and spend the day feeling guilty about it.

AI is well suited to this exact problem: turning a topic and a rough idea into a self-contained plan a stranger can pick up cold. Here's how to do it properly, with prompts you can copy straight in.

1. The full reliever plan, one prompt

This is the one to save. It builds a plan a reliever with zero context can run start to finish.

"Write a reliever lesson plan for a [year level] [subject] class, [length] minutes long. The reliever does not know this class or this content, so every instruction needs to be explicit — assume they are not a specialist in this subject. Include: a 5-minute settling task students can start immediately, the main activity with step-by-step instructions the reliever can read aloud, exact page numbers or resources if I list them below, a backup activity if we finish early, and what to do if a student finishes very quickly or gets stuck. My students are currently working on [topic/where we're up to]. [Paste any resources, textbook page numbers, or worksheet content here.]"

The key detail is telling it the reliever isn't a specialist — that's what stops it from writing something only you could teach.

2. When you genuinely have nothing prepped

Some sick days hit before you've planned that far ahead. This prompt builds a plan from scratch that still moves learning forward instead of just killing time.

"I teach [year level] [subject]. My students are generally working at [brief description of level/ability]. Design a standalone [length]-minute lesson on [topic] that needs no specialist subject knowledge to deliver, requires only materials a school would already have (paper, whiteboard, textbooks), and includes a clear right/wrong answer key so a reliever can mark or check work as they go."

The answer key matters more than people think — it's what lets the reliever actually manage the room instead of just supervising a worksheet nobody's checking.

3. The behaviour and logistics note

The lesson content is only half the problem. This one covers the part that actually goes wrong on cover days.

"Write a short cover-class information sheet for a reliever, covering: how to take the roll and where absences get recorded, seating plan notes if relevant, 2-3 students who may need extra support or check-ins, what to do if there's a behaviour issue, and who to contact if something urgent comes up. Keep it to one page, plain language, no jargon."

Paste your school's specific referral process and behaviour contact into the prompt once, save the output as a template, and you'll only need to tweak names and details each time.

Build it once, reuse it forever

The real time saving isn't in prompt one — it's in doing this once, saving the three outputs as templates in your files, and swapping in the topic and resources each time you're out. A five-minute edit on results you already trust beats a twenty-minute scramble through last term's folders every time.

Send it to whoever manages relievers at your school, and you've turned a stressful morning into a two-minute forward.

TeachSmarterAI helps New Zealand teachers use AI tools effectively. New posts every week.