Cornerstone Test Prep and Tutoring

Cornerstone Test Prep and Tutoring, founded in 1999 by Art Clay, offers personalized one-on-one tutoring and test prep for SAT, ACT, PSAT, SSAT, ISEE, GRE, and GMAT exams. Art has helped over 4,000 students in the Greater Boston area improve their standardized test scores through customized strategies, performance analysis, and targeted instruction that identifies each student's unique strengths and weaknesses. The practice focuses on breaking test-taking into manageable concepts, teaching test-maker patterns, and building confidence—with students reporting significant score improvements and successful college admissions outcomes.