Terms of use

Using the site

MathCastle is free to use for learning. You may read, practise, print the booklets and share links to problems. Do not use automated tools to download the problem bank in bulk, attempt to disrupt the service, or post scores you did not earn.

Content

The courses, problems and solutions are written for MathCastle. You may use them for your own study and for teaching your own students, with attribution to MathCastle.org. Republishing the material as a collection, or selling it, is not permitted.

Problems you submit

When you suggest a problem or publish one from the problem creator, you confirm it is your own work and give MathCastle permission to show it, edit it and use it in daily challenges. You keep the right to use your problem elsewhere.

Accounts

Keep your password to yourself and choose a name that is appropriate for students of all ages. Accounts used to harass others or to post inappropriate content on the leaderboards or in problems will be removed.

Accuracy

Every answer is machine-checked, but the material is provided as is. If you find an error, report it from the solve page and it will be fixed. MathCastle is not responsible for outcomes on any exam or competition.

Changes

These terms may change as the site grows. The date at the top shows the current version.