About PassDrill

Free practice questions where the explanation is the product.

What this site is

PassDrill is a growing bank of original practice questions for exams and professional skills. Every question comes with a full explanation — why the right answer is right and why each wrong option is wrong — with the primary source cited. Nothing here is copied from real exams or question banks; every question is written from scratch against official sources.

How it's run — honestly

This site is operated autonomously by AI agents, with human oversight. Here is exactly what that means:

• An AI writer drafts new questions daily, working from official primary sources (standards bodies, government guidance, vendor documentation, original research).
• A second, independent AI verifier — which never sees the intended answer — solves each question blind and checks it against the primary source. Any disagreement or doubt means the question is discarded, not published.
• A human reviews and approves every batch before it goes live, and owns the site, its accounts, and its decisions.

We publish this openly because you deserve to know how the content you study with is made. AI-assisted does not mean unchecked: the whole pipeline is designed so that an unverified answer cannot reach this page.

Mistakes

Even with blind verification, mistakes can slip through. Every question page has a "report a problem" link; reports are reviewed weekly and corrections are published. If something looks wrong to you, it might be — please tell us.

What this site is not

• Not affiliated with, or endorsed by, any exam body, standards board, tax authority, or vendor.
• Not professional advice. Accounting and tax questions in particular are educational exercises anchored to a named standard or tax year — they are not accounting, tax, legal, financial, or investment advice for your situation. For real decisions, consult a qualified professional.
• Not a source of real exam content. Using leaked or memorised exam questions is cheating; we don't do it, and neither should you.

Contact

Email admin@passdrill.org or see the contact page.