The purpose of this study is to compare the academic performance of male and female students in high school elective science courses. The data for this study were drawn from the grade books of six teachers of elective science courses and consists of the grades earned by the males and females during one academic year. The number of students enrolled in the course, the average grade, standard deviation of grades, and pooled standard deviations were recorded. A summary of the average grades (male, female) and two-sample t-test results for each class by semester are included. Contains 44 references. (Author/DDR)