SAN FRANCISCO (AP) — The nonprofit organization behind the SAT college entrance exam has teamed up with a Silicon Valley pioneer in online education to make test preparation materials available for free starting Tuesday, a move aimed at making the college admissions race less stressful and more fair. College Board President David Coleman said the partnership aims to level the college admissions playing field by putting high-quality training within easy reach of students without the funds for commercial test-prep services or the family support often needed to stick with a self-paced practice book. Nicole Hurd, founder of a nonprofit called College Advising Corps that places trained advisers in underserved high schools, was given a preview of the materials and called them a "real paradigm shift."