Investigated the effect of test anxiety on academic achievement in 200 male and 200 female 1st-, 2nd-, 3rd-, and 4th-yr college students. An Arab version of the Test Anxiety Inventory was used. Female Ss scored higher than male Ss in all grades. Anxiety scores followed a curvilinear relationship for male and linear relationship for female Ss. Test anxiety was negatively correlated with academic achievement for both genders. Treatment of test anxiety, especially with regard to improvement of academic achievement and intellectual performance, is discussed.