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 document is concerned with the effects of this program on the enrollment at other schools in the district in special courses for the gifted and talented (GT) along with the possible effects on the quality of the faculty in those programs. The data described in this report indicate that the new program had no negative impact on the ability of the other high schools to sustain ninth grade GT programs in English, mathematics, and social studies, although in science the issue remains unclear for several reasons. The reductions in faculty in other high schools due to transfers to the new school likewise were determined to have no negative impact on GT offerings at any grade level. (TW)