Advanced Law Enforcement and Investigations (graduate certificate) Posted on July 7, 2011 at 3:57 pm. Durham College is a leading college that offers justice education in Ontario. The Advanced Law Enforcement and Investigations Graduate Certificate Program is delivered in two, 14-week semesters and provides students with opportunities to develop relevant applied skills specific to the field of justice. Students in this program will: Gain experience in dealing with social and organizational issues related to law enforcement agencies and community safety within an increasingly diverse society. Apply their in-class knowledge and gain valuable hands-on experience in simulated crime scene scenarios as well as through two field placements totaling 256 hours, with various law enforcement and security-related agencies.