Last year Corinthian discontinued enrolling ability-to-benefit (ATB) students, pressuring total student enrollment numbers in recent quarters. ATB students refer to those applicants who do not already possess a high school diploma. Corinthian stopped admitting those applicants in Sept., 2010, as it worked to improve its cohort default rates. Corinthian said Tuesday it will "begin enrolling ATB students again in the near future." New student enrollment plummeted 21.5% last quarter, while total enrollment was down by 8.9%.