The College Board is looking forward to the possibility of adding to the Scholastic Aptitude Test several scores in addition to the present Verbal and Mathematics scores. Towards this end, eleven newly developed or newly adapted tests were tried out in combinations of four at ten colleges. The intercorrelations and validities for these tests have been computed for the groups of students taking the more popular freshman courses, a total of 79 groups. A composite college table and a list of cases where the experimental test raised the prediction above that already provided by SAT have been set up to aid in decisions with regard to the tests. Some very satisfactory gains in the multiple correlation were obtained. Corrections for restriction of range and for attenuation are regarded as unnecessary but were carried out in a couple of cases for illustrative purposes.