Volunteer training for people interested in working with children in school programs at Agua Caliente Park takes place from 8 a.m. to noon, Tuesday and Wednesday, Sept. 17, 18; and Friday, Sept. 20; free. Volunteers are asked to commit eight hours of volunteer service weekly; programs are typically two hours each. Call 615-7855, or visit eeducation@pima.gov for reservations, and more information.