kaoshen.co is a free SAT practice site built around mistakes, not just questions. Students can practice SAT Math and Reading & Writing skills with strategy tips, hints, and step-by-step explanations. When a student gets a question wrong, the mistake is logged automatically, explained by wrong-answer path, and brought back later through spaced retests so the student can prove they actually fixed it.
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Comments
1The mistake-specific retest flow is clearly explained. One detail on the homepage could use clarification: the text describes reviews after 1, 2, 4 and 7 days, while the illustrated example shows Day 3 and Day 14. Are those examples illustrative or different review schedules? Making that distinction explicit would help students plan their practice.