Murder on the Campus (1933).

Charles Starrett, ca. 1931

In Murder on the Campus, a reporter (Charles Starrett) seeks to exonerate his coed girlfriend (Shirley Grey), who is accused of murder. The film is based on The Campanile Murders (1933) by author-screenwriter Whitman Chambers (thanks to Mystery*File for link to serial version of The Campanile Murders).