“Local police officer” also includes any officer or employee of a school district or a community college district that has established a police department pursuant to Section 39670 or 72330 of the Education Code, whose principal duties consist of active law enforcement service, except persons whose principal duties are clerical or otherwise clearly do not fall within the scope of active law enforcement, even though the person is subject to occasional call, or is occasionally called upon, to perform duties within the scope of active law enforcement. This section
shall only apply to any school district or community college district that prior to June 30, 1982, had amended its contract to provide membership for local police officers.