22 hand-picked questions covering exactly the traps that cost strong Korean students the most points: sign errors, extraneous roots, condition-matching systems, cofunction identities, and conceptual statistics.
Before you start
1Two modules, 11 questions each, 35 minutes per module — timed exactly like the real digital SAT.
2Every question is deliberately hard. There is no easy warm-up section — this is built to stress-test your weakest reflexes.
3A full graphing calculator (Desmos) is available the entire time via the Calculator button, top right.
4Use Mark for Review and the cross-out tool on choices exactly as you would in Bluebook.
5After you submit, every question — right or wrong — gets a full teaching explanation with the specific mistake pattern to watch for.
This is an original mock built to mirror the difficulty and format of the digital SAT — it is not official College Board content.
Module 1 complete
Nice work. Take a breath, then move on — you cannot return to Module 1 once Module 2 begins, exactly like the real test.