This page summarize information about Allegheny's credit and grading systems. The Semester Calendar Allegheny divides the academic year into two semesters.Students may request a Leave of Absence from the College without grade penalty up until the last day of classes in any semester. CCAC forms library is one place to look for a form or document that a student or person may need. A student may submit a medical withdrawal request when an unexpected serious illness or injury prevents the student from continuing classes. A student may submit a medical withdrawal request when an unexpected serious illness or injury prevents the student from continuing classes. Counties in the prior study and Allegheny County. Please note that these forms are meant to be downloaded and filled in, and may not work properly in your browser window.