Terms of Service
Last updated: 5 November 2026
This site (exercises.lol and exercises.com.cn) offers free study materials for school and university exams: handouts, exercise sheets, past-paper practice, lesson videos, coding lessons and language practice. By using the site you agree to these terms. Our Privacy Policy explains how we handle your data.
Using the site
- The site is free to use for personal study and for teaching. Teachers may use our materials with their own classes.
- Most of the site works without an account. If you create one, keep your password to yourself; you are responsible for what happens under your account.
- Students under the age set by local law should use the site with the knowledge of a parent, guardian or teacher.
Acceptable use
Please do not:
- try to break, overload or get around the security of the site, or access other people's accounts or data;
- scrape or copy the site in bulk, or resell or republish our materials as your own;
- use the AI features to produce harmful, abusive or unlawful content, or to submit other people's personal information;
- use classroom features to monitor anyone outside a class you teach.
We may suspend accounts or block access that breaks these rules.
Our content
Handouts, exercises, explanations, figures and videos written for this site belong to us. Past exam papers and mark schemes belong to their exam boards and are provided for study only. Third-party images are used under their own licences, listed on the image credits page. If you believe something on the site infringes your rights, tell us through the feedback button and we will look at it promptly.
AI features
Marking, hints, the chat partners and the writing coach use AI models. Their answers can be wrong: check important results against your teacher, the mark scheme or the official syllabus. AI marks are a study aid, not an official grade.
YouTube videos
Our lesson videos are also published on our YouTube channel. We use YouTube API Services to upload and manage these videos on our own channel. Watching our videos on YouTube, or wherever YouTube video is shown on this site, is subject to the YouTube Terms of Service, and Google handles that data under the Google Privacy Policy. By using these features you agree to be bound by the YouTube Terms of Service.
No guarantee
We work hard to keep the materials accurate and the site available, but we provide them as they are, without any guarantee that they are complete, error-free or always online. To the extent the law allows, we are not liable for any loss arising from using the site. Nothing in these terms limits rights you have under the law of your country that cannot be excluded.
Changes and contact
We may update these terms; the date at the top shows the latest version. Questions or concerns can be sent with the feedback button on any page or to the site administrator.
Contact: 柏秦（西安）科技有限公司 · privacy@exercises.com.cn.