AP, full name Advanced Placement, is a program created by the College Board, offering university-level courses to high school students. AP courses have 38 subjects, divided into 7 categories: art, English, history and social sciences, mathematics and computer science, natural sciences, world languages and literature, and Capstone diploma projects. The purpose of AP courses is to enable high school students to get in touch with university courses in advance, and to complete some university credit courses and exams. AP exam scores use a 5-point system, and candidates can get 1, 2, 3, 4 or 5 points. Generally, points of 3 or more can be exchanged for credits in universities, but there are many special examples. Some universities may only accept 4 or 5 points.