Associations of School Resource Officers (SRO's), typically at the state level.
Texas Association of School Resource Officers
Frisco, TX. A 501(C)(6) nonprofit corporation for school based law enforcement officers, school administrators, and school safety/security personnel.
National Association of School Resource Officers
Hoover, AL. The world's leader in school-based policing, NASRO provides the highest quality of training to school-based law enforcement officers in order to promote safer schools and safer kids.