The Thomas Jefferson High School for Science and Technology (Fairfax County, Virginia) offers a comprehensive college preparatory program emphasizing the sciences, mathematics, and technology. The school serves students selected on the basis of aptitude and interest in the biological, physical, mathematical, and computer sciences, and who intend to persue college preparation in the sciences, engineering, or related fields. This report addresses the selection and admission process for students attending the school. Selection of students is a competitive process, with the majority of the students entering the program in the ninth grade. Data is presented concerning the current enrollment patterns and the makeup of the student body. Some refinements to the admission process are discussed. An overview and an assessment of the selection process currently used for freshmen, sophomores, and juniors/seniors is presented and discussed. It is concluded that, overall, the selections and admissions process has worked well to date. (TW)