The agency which certifies police academies in Texas is the Texas Commission on Law Enforcement (TCOLE). Many major cities and sheriff's offices also operate their own training academies, while some smaller municipalities cooperate to maintain regional academies. Some community colleges offer police training courses as well. There are three state-level law enforcement academies: the Texas Department of Public Safety which trains state troopers, the Texas Parks and Wildlife Department who train game wardens, and the Texas Department of Criminal Justice that trains state corrections officers. Police academies typically last from 18 to 30 weeks, though there are many variations. All police cadets are required to obtain at least a Basic Peace Officer Proficiency Certification from TCOLE before beginning active duty; some academies also require their cadets to obtain an Intermediate certification before graduating. TCOLE offers certifications for jailers and corrections officers, who must also undergo training prior to being commissioned, (albeit typically much less than police officers).