Questionnaires designed to determine the extent of computer usage in secondary schools in Texas and the level of commitment to this usage by teachers, principals, and campuses were mailed to 1,950 principals. Results based on the 1,191 30-item forms returned indicate that computer usage generally increases with campus size. Principals of schools that were using computers felt more strongly about the need for computer literacy for all high school graduates than principals of schools where computers were not used, with agreement positively related to district size. A similar trend was found in principals' reporting of their own level of computer literacy. While 62 percent of all schools reported computer use, the number of computers per campus was relatively small. Current usage emphasizes math and computer programming, however, other computer uses in instruction are increasing, with users reporting a strong tendency to purchase machine-ready software. Over 70 percent of all schools using computers for instruction had begun such use within the preceding 3 years. Cost is a primary inhibiting factor for computer use, and little campus-wide commitment currently exists for computer usage. The survey form used and 21 data tables are appended. (LMM)