Public Schools Build a relationship with the school guidance counselor. Always 'preach' the Gospel, use words only when absolutely necessary to get your message across.
Schools can always use such personal items as head lice shampoo, soap and also other hygiene items.
Understand the local DNA, and work to match your DNA to it, if you are serious about reaching the community, the DNA must match. Encourage your church members to be part of the above by serving as PTO leadership, and such 'non religious' functions. Our church has adopted an elementary school three blocks away. We have trained adults to teach classes in a program called Second Step, which is teaching skills in positive, proactive behavior, anger management, etc. We do this for several grade levels.