The 30% rule for AI in learning — helping your child use artificial intelligence responsibly

Your child types their history essay title into ChatGPT. A full answer appears in twenty seconds. They copy it, hand it in, and have learned nothing. The 30% rule says this: up to 30% can come from AI, and 70% must be their own work. It is not about banning artificial intelligence. It is about teaching your child to use it without handing over their thinking.

What the 30% rule is

The 30% rule is a guideline: in any piece of schoolwork, no more than about 30% of the content should come directly from AI tools. The remaining 70% should come from the learner's own ideas, research and effort.

Eight out of ten students aged 13 to 18 in the UK said they are using AI tools in their schoolwork, according to a 2025 survey of 2,000 young people. Many use AI as a shortcut rather than a learning tool. The 30% rule draws a line between support and replacement.

Banning AI is both unrealistic and unproductive. Teaching a child that AI is a tool to support thinking — not a substitute for it — is practical.

Why the rule supports better learning

The Department for Education has released guidance to help schools and colleges consider AI safely and effectively, balancing innovation with safeguarding. Teachers need informed staff and clear boundaries.

Research into intelligent tutoring systems that adapt to each learner's pace has found they can support learning when teachers focus on guidance, emotional support and individual needs. But that benefit only appears when pupils understand *how* to use AI properly.

Pupils who hand over the whole task to a chatbot learn less. They do not develop problem-solving skills or retain knowledge. The 30% rule marks the threshold between helpful use and harmful dependence.

In practice: your child needs to write an essay in an hour. They type the topic into ChatGPT and receive an initial draft (30%). Then they read it, add their own examples, restructure the argument and insert their own analysis (70%). They think about the text rather than producing it on autopilot.

How the 30% rule works in real homework

English essay: AI creates a structure and opening paragraph (30%). Your child writes their own body paragraphs about the book they read, adds quotations from the text, argues their own interpretation (70%).

History project: AI finds and summarises two sources (30%). Your child searches for three additional sources independently, creates a timeline, draws a map, prepares their own questions (70%).

Maths homework: AI shows the method for solving one example (30%). Your child solves five similar problems independently, explains each step to themselves, corrects mistakes (70%).

Science presentation: AI generates a list of facts (30%). Your child selects the most important, reorganises their order, creates slides, adds images, prepares their talk (70%).

AI saves time on repetitive, mechanical stages. Your child is still thinking, still working, still learning.

What counts as the 70% — a guide for parents and carers

When you talk to your child about the 30% rule, be specific about what "own effort" actually means.

• Reading and analysis: Your child reads articles, books and websites — not just text from AI.
• Asking questions and experimenting: They ask "why?" and look for answers across different sources.
• Organising thoughts: They write notes in their own words, create mind maps, put facts in order.
• Own examples: They think of examples from their own life, school or local community.
• Verification: They check whether information from AI is true by comparing it with other sources.
• Creative connections: They link knowledge from different subjects, build their own arguments, draw their own conclusions.

This is what makes the work an educational experience, not just a quick homework tick-box.

Talking to teachers — will your child's school accept the 30% rule?

Do teachers know about the 30% rule? Does the school have written policies about using AI?

Schools across the UK are looking for clear direction on AI policy. The Department for Education has released several resources that touch on artificial intelligence in schools, but none provides a complete, adoptable policy framework. Some teachers will welcome a conversation about responsible use. Others may worry that your child is "cheating".

That is why it helps to:

• Take a screenshot or make a note — which parts of the work come directly from AI, which are original.
• Encourage your child to write a brief note to the teacher when handing in work: "I used ChatGPT for X (30%), the rest (70%) I did myself. Here's how…"
• Suggest a conversation with the teacher — some universities in the US and Europe have begun to adopt similar frameworks for AI use in student work.

A school that knows a parent is teaching their child responsible use of AI is more likely to engage with nuance rather than impose blanket penalties.

What to do this week - step by step

Three concrete steps:

1. Have a conversation without judgement. "I can see you're using ChatGPT for homework. That's normal. But let me show you how to do it responsibly." Explain the 30% rule. Ask questions, don't lecture.
2. Try it together on one example. Take a small homework task your child has coming up. Discuss what can come from AI (30%) and what your child must do themselves (70%). Write it down together.
3. Check in after a week. "How did the essay go? Did you stick to the 30% rule? What was hardest?" — this builds the habit of thinking about AI as a tool, not a shortcut to avoid work.