A study was conducted on the enrollments of students (N=13,856) in first and second year science courses at Pima Community College, Arizona, over a 5-year preiod. Of those students who passed these courses with a C grade or better (N=5,974), frequency distributions by sex were made. It was found that the distribution of male/female registered as well as male/female passed was approximately 50 percent. Also, females seemed to do better than males in the upper level science courses. An unusually high dropout rate of students who registered for these courses was uncovered, indicating a possible problem with students selecting science courses without adequate preparation. This drop out rate did not affect the male/female ratio regarding passing the course with a C grade or better. Several recommendations are made: (1) that the college maintain programs to keep the enrollments of female science students at current levels; (2) that some form of program be established to allow female science students to interact with female scientists; and (3) that the college study the reason for the high dropout rate of students in the sciences. Six tables and a 12-item bibliography are included. (Author/JB)