One thing to keep in mind when contemplating recruiting students is that teachers and administrative staff can be very busy during certain times of the year, and hard to reach at other times. Non-profits should strive to give as much advanced notice as possible about specific volunteer needs, along with reminders regarding any upcoming deadlines. Once relationships with local school officials have formed, things become easier to maintain.
At this time in their life, many people have trouble honoring commitments. Perhaps they underestimate how much they have on their plate, or overestimate how interesting a particular volunteer assignment will be. Perhaps they were simply coerced by parents or the school administration to volunteer, and their heart is not really into it. Help students succeed in their volunteer assignment by having clear attendance expectations.