Students in the eleventh grade in three Montgomery County, Maryland high schools were the subjects of a study to determine the effect of foreign language study on performance on the verbal section of the Scholastic Aptitude Test (SAT). The following results were reported: (1) when verbal ability is controlled, students who study foreign language for longer periods of time will do better on various SAT sub-tests and on the SAT-Verbal as a whole than students who have studied less foreign language; (2) having studied two foreign languages has no significant effect on SAT scores or on scores on the Test of Academic Progress (TAP); (3) language studied has no differential effect on SAT or TAP scores; and (4) there is some evidence that higher grades in foreign language study will increase the effect of this study on SAT scores (particularly the reading and vocabulary sub-scores). In conclusion, it appears that the effect of foreign language study makes itself felt more in the area of vocabulary development than it does in that of English structure use. (JB)