Privacy

Version 2, 20 October 2026. CastlEducation LLC, DBA CastlEd (“we”).

In short: there are no accounts, no advertising and nothing that follows you as a person. Your study record stays in your own browser. We see only what you choose to send us.

This site, castleducation.com

• No sign-in, no cookies and no advertising.
• Your browser keeps one note from this page, that you have seen the opening animation, so it plays shorter next time. It holds nothing about you.
• The site is served by Cloudflare, which handles each request (your address and browser details) to deliver the page and protect it from attack. See Cloudflare’s privacy policy.
• Visit counts. Every page on castleducation.com and its sub-sites carries Cloudflare Web Analytics, which counts page visits, the page you came from, the country, the kind of device and how fast the page loaded. It uses no cookies, stores nothing in your browser and keeps nothing that identifies you; we see totals only.

Engineering Exam Prep, review.castleducation.com

• Your record stays in your browser. Your answers, practice test results, refresher dates and examination date are kept in your browser’s storage for that address. We cannot see them. Clearing the site’s data deletes them, and another browser or device starts empty.
• Flags you send. When you flag a question, what you write, which question it was and the date are kept so we can correct the material. Until sending is switched on, a flag stays in your browser and you can copy it to us yourself; once it is on, the flag comes to us. Please do not put personal details in a flag.
• Results you copy to us. If you paste your results into an e-mail to us, we use them only to help you study and keep them only as long as that takes.

E-mail

If you write to us, we keep your message and address to answer you. We do not add you to any list unless you ask.

What we never do

• We do not sell, rent or trade anything about you.
• We do not use your answers or results for anything but your own study and improving the material.

When this changes

Accounts, so your record follows you across devices, and payments are planned. Before either is switched on, this page will say exactly what is collected, why, who processes it and how to delete it, under a new version number and date.

Who may use it

The site is meant for adults preparing for engineering examinations or plant work.

Questions or deletion

Write to hello@castleducation.com. We will tell you what we hold about you, if anything, and delete it on request.