In this subtitle the following words have the meanings indicated. “Correctional officer” has the meaning stated in § 8–201 of the Correctional Services Article. “Eligible institution” means: A public senior higher education institution in the State; or A community college in the State. “Police officer” has the meaning stated in § 3–201 of the Public Safety Article. “Probation agent” means an individual serving as a parole and probation agent, supervisor, or regional administrator for the Department of Public Safety and Correctional Services. “Service obligation” means to work as a police officer, probation agent, or correctional officer in the State not less than 5 years during the 8–year period after graduation.