Medical school professor Venetia Orcutt resigned last month after students wrote letters to Provost Steven Lerman, complaining she never taught a required course but gave every student an “A,” according to the Associated Press.

Three or more students sent letters to Lerman’s office, concerned with Orcutt’s absence during the 2009-2010 academic year from two out of three semesters of an evidence-based medicine course, according to the AP. The students said in the letters that Orcutt never discussed why she did not teach, but instead each student received an “A.”

Orcutt, who served as an assistant professor and chair of the department of physician assistant studies, did not immediately return a request for comment. Lerman also did not immediately return a request for comment.

The University is investigating the students’ claims, according to the AP.