Among the three NTE Core Battery tests, Professional Knowledge purports to measure skills that are acquired only after academic experience as an education major, while Communication Skills and General Knowledge both purport to measure skills that do not require this specialized experience. The scores of education majors for the 1986-87 national test administrations were analyzed for differential sensitivity of the three tests to educational attainment. Results were used for 43,000 examinations at three administrations. Since examinees with different degrees of experience who choose to take the tests may have different levels of skills, test scores were adjusted for grade point average. Results showed that Professional Knowledge was more sensitive to academic experience than were General Knowledge or Communication Skills. This outcome is interpreted in support of the construct validity of the Core Battery. An appendix contains three summary data tables. (Contains two tables, three appendix tables, one figure, and two references.) (Author/SLD)