The Global Assessment Certificate™ (GAC) program helps international students develop the academic knowledge, learning practices, and English language skills required to enroll at universities and earn a bachelor's degree (ACT, 2019). The GAC program includes three levels of instruction (Level I, Level II, and Level III), each entailing a combination of required and elective courses totaling 240 hours of classroom study plus 120 hours of independent study. Courses cover reading and writing skills, listening and speaking skills, mathematics, science, computing, business, social science, psychology, study skills, research skills, problem solving, team collaboration, oral presentation, and time management. This report describes research that evaluated GAC achievement as a predictor of ACT® assessment scores and meeting the ACT College Readiness Benchmarks. The ACT assessment is used to support college and university admissions decisions, and the ACT College Readiness Benchmarks are ACT scores associated with success in first-year, credit-bearing postsecondary courses (Allen, 2013).