This case study chronicles the efforts of a small high school over a 2-year period as it designed and implemented a response to intervention (RTI) program for students at the school. Their efforts were largely successful, with improved achievement, attendance, and grade point averages and a decrease in special education referrals. Major themes include the need to focus on quality core instruction as a means for preventing school failure, adopting a schoolwide approach, and developing curriculum-based assessments that make intervention meaningful. (Contains 1 table.)