What are the similarities and differences between the two tests?
Both tests use a multiple choice format. The CogAT is timed and has three sections which yield three sub scores, one for each section. The NNAT is also timed and has one section and one score. The highest possible score for each sub test of the CogAT and the NNAT is 150. On the new version of the NNAT (NNAT 2) the highest score is 160. The average score for each test is 100. Both the CogAT and the NNAT are nationally norm-referenced group ability tests administered as part of the FCPS testing program. The tests are given according to a child’s grade level and the score is based on his/her age. In Fairfax County Public Schools, the tests are administered by classroom teachers, usually in multiple settings. Occasionally, other staff, such as the counselor, administrator, or testing coordinator may administer the tests.
