A teacher’s checklist for checking AI-made answer keys

AI chat tools are fast at drafting worksheets, and it’s tempting to trust the answer key that comes with them. Don’t. Language models generate text that sounds right; they don’t reliably check their own work. Arithmetic slips, answers that don’t match the question, and “facts” that were never true all show up regularly.

Here’s a routine that catches most problems in a few minutes.

1. Work every problem yourself first

Before you look at the AI’s answers, solve the problems. This is the single most reliable check, and it’s faster than it sounds for a typical worksheet. Then compare. Where you disagree, figure out who’s right — sometimes it’s a badly worded question rather than a wrong answer.

2. Check that each answer matches its question

A common error is a key that’s internally fine but misaligned: the questions were reordered, a question was edited, or the key answers a slightly different question than the one printed. Read each question and its answer together.

3. Look for questions with more than one right answer

AI often writes open-ended questions and then supplies a single “correct” answer. For a main-idea or prediction question, note what range of answers you’d accept and what evidence would make them acceptable.

4. Verify every fact, date, name and quote

If a worksheet includes a historical date, a scientific claim, a quotation or a book title, confirm it against a source you trust. Invented quotations and citations that don’t exist are a well-known failure of these tools.

5. Ask the tool to show its work — then still check

Asking an AI to work step by step and compare its answers against your key can surface mistakes; we include a prompt for this in our AI tips. It’s a helpful second look, not a replacement for your own.

6. Separate student copies from teacher copies

Before printing, make sure the student version doesn’t include the key. It sounds obvious, but when a worksheet and key arrive as one block of text, it’s easy to miss.

Make it a habit

Keep a copy of our one-page AI planning checklist next to your keyboard. The point isn’t to avoid AI — it can save real time — it’s to stay the expert in the room.