The DSST (DANTES Subject Standardized Tests) is a series of exams that allow students to earn college credit for knowledge gained outside the traditional classroom. These tests cover a wide range of subjects, including mathematics, science, humanities, and social sciences. They are often used by military personnel and adult learners to accelerate their education. Administered by the Prometric testing service, DSST exams are available at various testing centers and can also be taken online. Each test typically lasts about 2 hours, and a passing score can help students fulfill degree requirements or transfer credits to their chosen college or university.