iPrepGenius Research
Original data studies computed from our bank of 195,000+ verified practice questions and anonymized practice data. Numbers update live as the dataset grows. Free to cite with attribution.
What Gifted Tests Actually Test: We Classified 20,000+ Practice Questions
We classified 20,000+ gifted-test practice questions. The finding most parents miss: the majority of this content isn't verbal at all.
Read the studyWhen School Tests Get Hard: Difficulty Data Across 70,000+ K-8 Questions
Difficulty data across 70,000+ K-8 questions: the share of hard questions climbs sharply from grade 3 to grade 6. Here's the curve.
Read the studyWhich Gifted Test Is Hardest? We Compared the Difficulty Data
Is the CogAT harder than the NNAT? We compared calibrated difficulty across every gifted and admissions test in our bank.
Read the studyWhere Gifted Testing Actually Happens: The Largest US School Districts
The largest US school districts by enrollment: how many students they serve, how concentrated it is, and the urban-to-rural split.
Read the studyWhen Do States Test? Every K-8 Assessment Calendar, Compared
We compared K-8 assessment calendars for all 50 states and DC. Nearly every state tests in one spring window - with one big exception.
Read the studyWhat Selective Private-School Admissions Actually Looks Like
Day schools outnumber boarding four to one among selective private schools. Here's the landscape families actually apply into.
Read the studySSAT or ISEE? We Checked What 200 Top Private Schools Actually Require
SSAT or ISEE? We checked what 200 selective private schools require. The ISEE is accepted by more - and many schools take both.
Read the studyHow Much of Each Gifted Test Is Pictures, Not Words?
The NNAT and Raven's contain no reading at all; the CogAT is about a third figural. We measured visual vs verbal for every gifted test.
Read the studyWe Read the Largest Districts' Gifted Pages. Most Don't Say Which Test.
We read the gifted-program pages of the largest US school districts to find one fact: which test a child actually sits. Most never say.
Read the studyCiting our research
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