The ERB-CTP® 5 is a test for high-achieving students and is given at private and public schools nationwide. It is used to collect basic information about student achievement and ability in the areas of the English language (reading comprehension, vocabulary, and writing skills) and mathematics. Students in Grades 1 through 11 take the CTP 5 (Comprehensive Testing Program) assessment.

The Comprehensive Testing Program (CTP) is a rigorous assessment for high achieving students that is administered by the Educational Records Bureau (ERB). Commonly referred to as the ERB-CTP, this test is used across the United States, and is particularly popular in private and select public schools, as well as in independent schools internationally.