This is a validity study of 15 tests tried out in an attempt to improve the capacity of the College Board tests to predict the college performance of high-level students. The tests were intended to challenge such students in a way that a mere increase in the difficulty of present tests probably could not do. The experimental tests were named as follows: 1. Spatial Reasoning 2. Data Sufficiency 3. Insightful Reasoning 4. Logical Reasoning 5. Alternative Expressions 6. General Understandings 7. General Information 8. Short-Item Information 9. Identification of People 10. Integration 11. Induction 12. Object Sorting 13. Directed Memory 14. Verbal Fluency 15. Reference Reading. six of these tests were given at each of 11 very high-level colleges, and their validities for freshman grade average and individual freshman grades were compared with the validities of the SAT, achievement tests, and high-school rank.