A study of the U.S. Navy officer students who were registered in the Operations Research/System Analysis curriculum at the Naval Postgraduate School (NPS) in spring, 1974, was conducted using biographical data, the Strong Vocational Interest Blank, and the Graduate Record Examination to develop an equation predicting academic performance of U.S. Navy office students. Several prediction equations were derived, using a development sample and then cross-validated, using a hold-out sample; the results were statistically significant. Four of the prediction equations derived were selected to be further analyzed to obtain regression coefficients, using the Jacknife procedure. No significant differences were found between the results obtained using the Stepwise Regression procedure and the Jackknife procedure. It was concluded that data from the three instruments (the biographical questionnaire, the Strong Vocational Interest Blank, and the Graduate Record Examination), as well as data from any combination of two (or three) of them, provided higher potential for predicting academic performance than did prior academic performance. It is pointed out that the group studied was highly homogeneous; already accepted to NPS, all the officer students had a prior grade average of 2.5 or above. Among appendixes are the biographical questionnaire, the Strong Vocational Interest Blank, and graduate education potential categories for classification. (Author/AJ)