Curriculum GPA Requirement for LOR's You must have an average GPA of 2.00 or better for the courses required to earn the Letter of Recognition. At least one of the courses must have been taken at Prince George's Community College. Required Courses--Food Service Mgt. LOR Take HSM-1550, HSM-1560, HSM-1630, and HSM-2020. HSM-1550 Food Service Manager Training and Certification in Sanitation HSM-1630 Food Service Operations HSM-2020 Food and Beverage Purchasing and Cost Control