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Especially useful to hear about

• A wrong answer. This is the one worth interrupting anything for. Every answer here was written by hand rather than generated, which makes the errors ordinary human ones rather than nonsense — and ordinary errors are the kind that survive proofreading. Paste the question as it appeared, and add the sheet number printed at the foot of the page — together they pin down the exact item.
• A rule taught differently where you are. The answer keys follow American usage and the Common Core sequence. Serial commas, single versus double quotation marks, collective nouns taking a singular verb — these genuinely differ between American and British teaching, and between one district and the next. If your curriculum differs on something, say so and it can be noted on the page rather than silently marked wrong.
• A missing skill. If there is a grammar topic your class needs that is not in the list, it is worth adding. Say which grade you teach and roughly how you introduce it, because the useful part is the sequence, not just the label.
• Something that will not print properly. Sheets are laid out for US Letter with half-inch margins. If a worksheet spills onto an extra page on your printer, or a question breaks across a page in the middle, say which browser and paper size you used.

What to expect back

One person maintains this site, so there is no support queue and no ticket number. Reports of a wrong answer are the priority and get fixed ahead of anything else; suggestions are read and kept on a list. If a fix goes out, the page changes without any announcement — there is no newsletter and your address is not added to anything.

Answered here already

Can I use these with my class, or sell them?

Print, photocopy and hand out freely, at school or at home. You may not sell them or republish them as your own. The terms of service spell out both sides of that.

Do you store what I generate?

No. The first sheet arrives already built as part of the page; every change, reshuffle and print after that happens in your browser and nothing about it is sent back. The privacy policy is the long version.

What is the number at the bottom of the sheet?

It is a short fingerprint of that exact combination — grade, skills, question count and shuffle — so two printouts carrying the same number are the same paper. That is what makes it useful for a class set. It is not something you type back in, and it is one-way, so when you report a wrong answer send the question text as well rather than the number alone. A page always opens on the same worksheet; pressing New questions is what changes it.