The 80% Rule for Teachers

The 80% Rule in Brief

The core principle: Students complete 80% of their thinking before using AI. Then AI becomes a feedback tool - not an answer generator.

Why 80%? It ensures students do the productive struggle - the part where real learning happens - before getting assistance. By the time they turn to AI, they've already organized their thoughts, made decisions, and wrestled with the hard parts.

What This Looks Like in Practice

For Writing Assignments

1. Student writes their complete first draft (80% or more)
2. They ask AI: "What's weak in my argument?" or "Where did I lose clarity?"
3. They revise based on feedback - AI doesn't rewrite for them

For Research Projects

1. Student identifies their thesis and main points
2. They find and evaluate sources themselves
3. After drafting, AI can suggest: "What angles am I missing?"

For Problem-Solving

1. Student attempts the problem and shows their work
2. If stuck, they ask AI: "What concept am I misunderstanding?" rather than "What's the answer?"
3. They complete the problem themselves with that insight

Classroom Implementation Ideas

Make the 80% Visible

Consider requiring students to submit their "80% draft" before using AI tools. This creates accountability and makes the learning visible.

Teach Good Prompts

Spend time teaching the difference between prompts that short-circuit thinking and prompts that enhance it:

• Not helpful: "Write my introduction"
• Better: "What's unclear about my introduction?"
• Not helpful: "Solve this equation"
• Better: "I'm getting stuck after step 3 - what concept am I missing?"

Model AI as Editor, Not Author

When you use AI in class demonstrations, show it in the feedback role. "Here's my draft - let's see what AI thinks is weak." Students learn by watching how you use the tool.

Discuss What AI Gets Wrong

Show examples of AI making mistakes - especially in your subject area. This builds healthy skepticism and reinforces that AI is a tool, not an authority.

Talking Points for Students

Here's language that might help explain the approach:

"AI is like a very smart friend who hasn't done your specific assignment. They can tell you if your argument makes sense, but they can't write your argument for you - because they don't know what you think."

"The learning happens in the struggle. If AI does the struggling for you, you're not learning - you're just copying."

"You can use AI on this assignment. But I'll ask you to explain your thinking in class. If you can explain it, you learned it. If you can't, we both know what happened."

A Note on Detection

AI detection tools are unreliable and getting worse as AI improves. Rather than playing cat-and-mouse with detection, consider:

• Requiring in-class work for a portion of grade
• Oral explanations of written work
• Process-based assessment (drafts, revisions)
• Questions that require genuine analysis, not just information

The goal isn't catching cheaters - it's making the thinking process visible and valuable.

Share With Parents

If you use the 80% Rule in your classroom, consider sharing this website with parents. Consistent expectations at school and home help students develop good habits.

You're welcome to reference or link to any material on this site. If you'd like to adapt anything for school newsletters or handouts, feel free - just keep the core principles intact.

I'm Still Learning Too

I'm a parent, not a teacher. I developed these ideas for my own kids and shared them here. Teachers have insights I don't have. If you try something that works well (or doesn't), I'd love to hear about it.

This is new territory for all of us. We're figuring it out together.