How to write sub plans in under 30 minutes on Mac: a teacher's routine

A sub plan is a short note that lets a stranger teach your class for a day. It has to answer four questions: where the sub should be, what the class does, what to do when something goes wrong, and who to ask. The routine on this page spends most of its time on the last two, because those are the parts people skip when they are tired.

What an absence costs your students

Most of the research is about absence, not about lesson plans. In one urban US school district, each 10 days of teacher absence cut students' math achievement by 3.3 percent of a standard deviation. That result comes from NBER Working Paper 13356, which used data from that one district. It is a strong signal, but it is one district, so do not treat it as a national number.

The loss is not spread evenly. Schools in the poorest income quartile averaged nearly one extra sick day per teacher, compared with the richest quartile, according to NBER Working Paper 13648. The same paper finds that schools with persistently high absence rates were much more likely to serve low-income students. A clear plan will not fix that. It can keep one day away from costing the kids in your room more than it must.

Schools also worry about finding cover. In the NCES School Pulse Panel, collected in November 2023, 35 percent of public schools were extremely concerned about obtaining substitute teachers. It was the top concern the survey measured. That number tells you how worried schools are. It does not tell you how often a fill failed, so do not read it as a failure rate.

What the absence costs you

The cost you feel is your own time. I could not find a study that measures how long teachers spend writing sub plans. So the 30 minute goal on this page is a target you set, not a benchmark from research. Treat it as a budget. If the plan runs past it, the template is probably missing a section.

The time usually goes to the same places. You start from a blank page. You retype the room routines you typed last term. You worry about a class you know well, handed to someone who has never met them. Each of those habits costs minutes that a saved template could have covered.

Pay is part of the picture too. O*NET, which draws on BLS wage data, lists a 2025 median of $41,670 a year, or $20.03 an hour, for short-term substitute teachers. It projects slower-than-average growth of 1% to 2% from 2025 to 2035. Plan as if the sub has never walked into your building, because they may not have.

Researchers have tested harder fixes. A randomized experiment in India, published in the American Economic Review, used daily camera monitoring and salaries tied to attendance. Teacher absence fell by 21 percentage points in the treatment schools. That is a different country and a different system, so this guide does not rely on it for US sub plans.

Why sub plans take so long to write

Most delays come from the blank page. You open a new document, type a heading, and stop. You do not know which sections a sub needs, so you start over the next day. A fixed template removes that choice, and the time you lose to it.

• You start from a blank page every time.
• Notice is short, and the plan is due before the first bell.
• The sub does not know your room routines, so you explain them in full.
• The plan lives in several places, so you hunt for the worksheet.
• You write a lesson for yourself, not a note for a stranger.

Short notice makes it worse. If you learn about an absence the night before, you have little time to write. A plan that is mostly ready before you need it turns a late night into a quick edit.

The plan itself also needs care. Students need the schedule and the routines for lunch, passes, and the door. A sub needs to know which students need extra help, and that list needs care. Check your district's rules before you put any student name in a file.

Fixes you can use today without buying anything

None of these fixes needs a new app or a paid tool. They use Pages or Google Docs, and a folder on your computer. Start with the template. You build it once, and every later plan starts from it.

Build one master template you can copy

Open Pages and choose File > New. Pick a blank template or any layout you like. Press ⌘S and save it as Sub plan master. Pages starts every document from a template, so the layout you save becomes the starting point for every later absence.

In Google Docs, work in the browser. Open your master and choose File > Make a copy. Rename the copy with the date and the class. Keep the master clean, so each absence starts from the same page.

Use a fill-in list, not an essay

The master needs these sections. Keep each one to a line or two.

1. Schedule: bell times, periods, lunch, and recess.
2. Room routines: attendance, lunch count, bathroom passes, and the door.
3. Activities: two or three tasks, each with a page number and a file link.
4. Early finishers: one quiet task that needs no prep.
5. Who to ask: the office extension, a nearby teacher, and the student helpers.
6. Behavior: the one rule that must hold, and what to do when it breaks.

Write each line as a fragment, not a full sentence. A sub does not need your teaching voice. They need to know where the pencils are and what happens after the afternoon block. Aim for one page. A longer note is harder to read in a rush.

Keep materials in one place

Many plans fall apart on the materials, not the lesson. The worksheet sits in a desk drawer. The answer key is on your home computer. Put every file the sub needs in one folder, and link that folder from the master. If the school insists on paper, staple copies to the front of the binder.

Keep a standing reserve too. Save two or three activities that need no prep, such as a reading task or a sorting game that uses materials already in the room. Use them when the planned lesson fails to load or the supplies are gone.

Share the plan with the office and a co-teacher

Share the Pages file with a co-teacher or the front office. Click Share in the toolbar and invite them. Pages lets you choose whether each person can edit or only view the document. Give the office view-only access, and let a co-teacher edit.

For email, send one short message with the plan attached. Export the file first with File > Export To, then pick PDF or Word, depending on what the office opens. Pages can export to Word, PDF, or another file format. The Gmail routine for teachers covers the browser side.

Dictate the wordy parts, then check them

Long notes are slow to type. Speaking may be faster for you, and you can test that with the speaking vs typing test. Hold fn in any app and talk. Lazur dictates clean, formatted text at the cursor. Read it back before you save.

Check the names, times, and room numbers first. Dictation can mishear names, times, and room numbers, and a wrong bell time causes more trouble than a missing comma. Fix those before you share the file.

Where Lazur helps, and where it does not

Lazur does not write your class plan from nothing. It does not know your unit or your students unless you say so, or unless the page is on screen. It helps with the parts that take time: a first draft of the sub note from your bullets, dictation at the cursor, and walkthroughs for menus you use once a term.

Lazur listens and looks at your screen only while you hold the shortcut. Hold ⌥ ⌘ to ask about anything on screen, and Lazur answers out loud. Audio and the screenshot go to AI providers to answer, and they are not stored. Content is never used to train AI models.

Lazur does not click buttons, edit files, or operate other apps for you. It is not a plugin or add-in for Pages, Google Docs, or Gmail. It runs on macOS, on Apple silicon and Intel Macs. Windows is planned, not available.

You can read the pricing page before you decide, and the download page has the Mac app. Every fix on this page works without either one.

Mistakes that make sub plans fail

• Writing a lesson when the sub needs logistics first. Put the schedule and routines above the lesson.
• Leaving out bell times. A sub checks these first, so put them on the first line.
• Forgetting the office. Add the extension and a room map to the note.
• Keeping the only copy on your home computer. Share it or print one.
• Putting student names in a shared file without checking district rules.
• Giving no way out. Add an early finisher task, even if you hope not to need it.

When you cannot write a plan at all

Some mornings you learn about an absence with no time to spare. Call the office first, then ask a colleague to copy your master and fill in the schedule. A rough plan is still better than nothing. Rewrite it the next day, when you have time.

Keep the master current, including for long absences

When you return, update the master before you forget what happened. Note what worked and what did not. Remove old activities and keep the routines. Each plan should start from a better master than the one before.

For a long absence, add one page for each day, with the same sections. Keep the room routines the same across pages, so the sub learns them once. Add test dates and due dates to the schedule section.