There are various batteries that are designed to predict success in different occupations or fields of study. They vary in coverage of aptitudes; independence of separate parts; and evidence of validity. This paper is concerned with the first steps in developing and trying out a battery. This battery is intended for use at the college entrance level. In making up this battery, many tests were studied. They are described here. The five and one half hour long battery was given to 760 plebes shortly before the end of their first summer at the U.S. Military Academy at West Point. The product-moment intercorrelations were calculated for the 44 variables. The intercorrelations are shown in the table. This is a draft of the first half of the article. A few course grade variables will be added, and a factor analysis will be made. The other half of the article will be concerned with factor analysis, interpretation of factors, and a discussion of progress that has been made toward the objective. (SGK).