Browse the Top Employment Agencies Serving Aston, PA

Substitute Teacher Service (STS) is a leading provider of educational staffing solutions, connecting Pennsylvania school districts with qualified substitute teachers, paraprofessionals, and support staff. With 30+ years of experience and partnerships across 80+ districts, we ensure uninterrupted learning through vetted professionals trained in classroom continuity. Our programs include emergency-certified guest teachers, classroom monitors, and student teacher placements.