Thomas Elementary - Mastery Charter School


Thomas Elementary is now accepting applications for the 2024-2025 school year. Please follow the steps below to apply online.

  • Visit Apply Philly Charter
  • Log in or create an account
  • Fill out your family profile and add your child as a student
  • Click on the Apply for September 2024 button
  • Select Mastery Charter School: Thomas Elementary as the school to which you would like to apply
  • Submit your application

Please note: If you are looking for a seat for your child for the current school year (2023-2024), you can still apply online today using Apply Philly Charter. Just click on the “Apply for Current Year” button to start your application once you’ve logged in.

Have questions about our school or need help navigating the process? Complete and submit this form, and a Mastery enrollment specialist will reach out to answer your questions and help you apply.

Your Neighborhood School in South Philadelphia

Welcome to Thomas Elementary, recognized by the Pennsylvania Department of Education as a Title 1 Distinguished School for the 2019-20 school year!

Thomas is a free, public charter school in South Philadelphia, serving over 600 students in grades K-6. We offer academic excellence in a fun, joyful environment. From math to music, and reading to field trips, our students receive a well-rounded education from loving teachers and leaders.

We focus on five core values: respect, responsibility, hard work, teamwork and kindness.

Thomas Elementary students have the opportunity to automatically attend our Thomas Campus, giving them the full K-12 Mastery experience.

Stop by and visit us any time!





Our School

  • Students come to school excited to start their day.  
  • The day starts with free breakfast.
  • Students are greeted by their teacher and head to their classroom for morning meeting.  
  • We value reading.  Students have at least 2-3 hours of reading where they work in small groups with the teacher.  
  • Students have classes in math, social studies, and science.
  • Students head back to the cafeteria to enjoy free lunch.
  • Afterwards, students enjoy free play or recess.
  • Students engage in art, physical education, music or Spanish. We are proud to educate the whole child at Mastery.
  • Once the school day is over, students may stay to participate in clubs or the aftercare program.  

Learn more about our K-12 Approach.

Thomas Elementary offers a variety of after school activities and clubs.  Aftercare is available at the school.

Some examples include:

  • Academic Enrichment
  • Art Club
  • Band
  • Board Game Club
  • Book Club
  • Chess Club
  • Thomas Tones Choir
  • Computer Club
  • Creative Writing Club
  • Dance
  • Debate
  • Field Hockey
  • Flag Football
  • Games Club
  • Homework Support
  • Literature Club
  • Music
  • Running Club
  • Scrabble
  • Snider Youth Hockey
  • Student Council
  • Yearbook Club
  • Any Sneaker or Shoe (Open toe shoes, heels, slides and slippers strictly prohibited)
  • Socks (Any sock free of Illegal Images or Inappropriate Wording)
  • Grey Polo Shirt (With or Without Logo)
  • Grey Thomas El house t-shirt (with house names on the back)
  • Any Mastery swag shirts (without hoods)
  • Skirts (Appropriate length)
  • Dark colored pants (Navy Blue or Black slacks highly encouraged)

Uniforms can be purchased at the school for $10 each.

Any student living in Philadelphia is eligible to apply for the lottery at Thomas Elementary. First preference, however, is given to students living within the 19148 zip code, followed by students living within zip codes 19145, 19146, and 19147, followed by all other applicants. This is so we can serve as a neighborhood school, per our charter. If you apply after the deadline, you will be added to our waitlist. The lottery will be held in early spring.

In the News

Two Mastery Charter Schools Designated a Title 1 Distinguished School

Read Article

Our Team

Peter Langer, Principal

[email protected] 

Peter Langer is thrilled to serve as the principal of Mastery Charter Thomas Elementary! Having worked in education in Philadelphia for 17 years and at Mastery since 2011, Peter has worked as a teacher, coach, and assistant principal prior to becoming a principal. Entering his 11th year as a Principal at Mastery, Mr. Langer has previously served as principal at Simon Gratz Mastery Charter and Mastery Charter Thomas Campus!

Principal Langer earned his undergraduate degree from the University of Notre Dame, teaching degree from the University of Pennsylvania ,principal certificate from Relay Graduate School of Education, and his Master’s in School Leadership from St. Joseph’s University.

A native of Buffalo, New York, Peter has called Philadelphia his home since 2006 and his lived in South Philadelphia for over a decade. One of the reasons that he loves working at Thomas is that he lives in the same neighborhood as his students.  He is thrilled to see them around South Philly! Further, Peter believes that Thomas Elementary has the best students, parents and teachers in all of Philadelphia. Soon the school will be known as the best neighborhood elementary school in Philadelphia!

When not working, Peter enjoys spending time with his daughter, exercising, gardening, and attending/watching live sports!

Our staff is available to support you and your child throughout their school experience. We are available to meet with families and answer questions via the email addresses listed here.