Substitute teacher jobs at Mastery Schools.
1.5 min
application
Weekly
payouts on Friday
0
headaches
Substitute teaching on your terms
Flexible schedule
The HelloSubs platform allows you to choose assignments that work for you!
Long-term, short-term, or in-between.
Get paid weekly
Choose your assignments and get a direct deposit every Friday.
Requirements
Philadelphia, PA — Requirements for Mastery Schools substitute teachers via HelloSubs:
U.S. work authorization required; bachelor’s degree preferred (or equivalent relevant experience); teaching or substitute certification is a plus but not required; must successfully pass all required background screenings and clearances.
Details
Philadelphia, PA — Mastery Schools:
In-person substitute teacher supporting a mission-driven, student-centered charter network. You’ll deliver provided lesson plans, maintain a strong and respectful classroom culture, and support schools committed to equity, high expectations, and student success. Apply today!
Support
Live support 6 days per week. Access to free and reimbursed training courses.
Why Mastery Schools?
Choose Mastery, Choose Student-First Work
At Mastery Schools, everything ladders up to one thing: making sure students graduate with the academic and personal skills they need to succeed and pursue their dreams. That mission shows up in how Mastery expects adults to operate too — putting student achievement above all, pursuing equity, serving families, and building a culture that combines high standards with joy and humor.
Join Mastery and Build a Career That Grows With You
Mastery positions itself as a place to grow and collaborate in a joyful, student-centered environment — with professional development, leadership pathways, and strong support structures designed to help educators improve quickly and take on more responsibility over time. If you want a school network where the work is mission-driven, the expectations are clear, and growth is part of the deal, Mastery is built for that.
