What does a good prompt look like for an educator?

Teachers already write excellent prompts every day. A substitute plan, a note to a teaching assistant, a request to the librarian for books on volcanoes: each one says who the students are, what they need to learn and what the finished work should look like. A good ChatGPT prompt for a classroom task is that same note, written for a fast but forgetful assistant who has never met your class.

A Beginner's Guide to ChatGPT frames every prompt in three moves: give ChatGPT a role, give it the context of your situation, then say exactly what output you expect. For educators, each move has a classroom meaning. The role sets the expertise, the context describes your learners, and the output request describes the material you will actually hand out or use.

The four things a teaching prompt needs

1. A role. "You are an experienced grade 4 science teacher" pulls the answer toward age-appropriate vocabulary and classroom routines. A role does not make the answer more accurate, but it changes the point of view.
2. Your learners. Grade, class size, reading levels, language learners, what they studied last week, what tends to confuse them.
3. The goal. One sentence: what should students know or be able to do at the end?
4. The format. Lesson length, sections you want, materials you have, and anything to avoid. OpenAI's advice for writing prompts makes the same point in general terms: be specific about context, outcome, length, format and style, and use precise numbers rather than words like "short".

UNESCO's quick start guide on ChatGPT for higher education, published in April, lists one more useful idea: ChatGPT as a "co-designer" that suggests ideas for a curriculum or an assessment rubric. That framing fits well. You stay the designer of the lesson; the model offers drafts you accept, change or throw away.

A worked example: a lesson plan on the water cycle

Here is a complete prompt for one lesson. Notice that it reads like a planning note, not a search query.

You are an experienced grade 4 science teacher who plans hands-on lessons.

My class: 24 students, ages 9 and 10. Five are learning English. They know the words "solid", "liquid" and "gas" from last week's lesson on states of matter.

Goal: by the end of the lesson, students can describe evaporation, condensation and precipitation in their own words and put them in order on a diagram.

Write a 45-minute lesson plan with these parts:
1. A 5-minute hook that uses something they can see or touch.
2. A 15-minute hands-on activity using only a clear plastic bag, water, tape and a sunny window.
3. A 15-minute group task.
4. A 10-minute check for understanding: 3 questions, with answers.

Use plain words. Give one simple sentence frame per stage for my English learners. Present it as a table with columns for time, activity, teacher actions and student actions.

Read the draft as you would a plan from a student teacher. Is the timing realistic? Will the bag-on-the-window activity actually show condensation within a class period? Are the check questions about the goal, or about something else?

Then refine instead of starting over. The book calls this working iteratively: start with a request, read the answer, then add context or narrow the request.

Good. Two changes: the group task needs a role for each of the four students in a group, and replace question 3 with one that asks students to explain why water droplets appear inside the bag.

More tasks that suit the same pattern

The same four parts work for most planning jobs. A few that teachers often try:

What to check before it reaches students

UNESCO's guide warns that ChatGPT has no way to check the information it gives, and its training data stops in 2021. The book's own disclaimer says the same thing in plain terms: these models make mistakes and sometimes make things up, so a person has to review the output. For a lesson plan, that means checking every fact, every number and every safety step in an activity. Leave students' names, grades and other personal details out of the prompt; describe the class instead.

How do you adapt it to a grade level?

Change the learners and the goal, then let those changes drive everything else. Here is the same water-cycle lesson rewritten for grade 10:

You are an experienced high school earth science teacher.

My class: 28 students in grade 10. They have studied heat transfer and can read a simple line graph.

Goal: students can explain the water cycle as a system driven by energy from the sun, and use real rainfall data to describe one pattern.

Write a 60-minute lesson plan: a 5-minute opening question, a 20-minute data activity using a provided table of monthly rainfall and temperature for one city, a 20-minute small-group explanation task, and a 15-minute written check with 4 questions that require reasoning, not recall. Include the answer key and one misconception to watch for.

Compare the two prompts line by line. The role moves from a hands-on primary teacher to a subject specialist. The learners' prior knowledge changes from states of matter to heat transfer and graph reading. The goal moves from naming and ordering stages to explaining a system with evidence. The timing grows, and the check asks students to reason instead of recall.

Two more levers help at any grade: ask for a reading level or word limit for student-facing text, and if a draft is still pitched wrong, say exactly how: "Rewrite the activity instructions so a 9-year-old can follow them without help."