About : The Results

A stunning performance gap (approximately 30 percentage points) exists between low-income minority students and the State average on standardized tests. All Mastery schools commit to eliminating this gap. Our goal is for at least 80% of students to achieve proficiency in writing, math, and reading.


Turnaround Schools


In 2005, based on the success of the original Lenfest Campus, the School District of Philadelphia invited Mastery to turnaround Thomas Middle School. In 2006, Mastery turned around Shoemaker Middle School, previously the second most violent school in the District. In 2007, Mastery turned around Pickett Middle School, formerly one of the lowest performing District schools.


After Mastery assumed management of the schools, test scores increased an average of over 40 percentage points per grade and subject, violence decreased by 80%, and student turnover dropped by one-third.


In 2010, Mastery turned around three elementary schools under Dr. Ackerman, former superintendent of the School District of Philadelphia. The Renaissance School Initiative, Dr. Ackerman’s bold strategy, was designed to turn around the lowest performing schools in Philadelphia. These schools remained neighborhood schools, with open admission to local residents. After Mastery took over, enrollment at these three schools increased an average of 16% -- with 100% of students from the local neighborhood. Violence has nearly disappeared. Attendance is up. Student turnover has dropped by 50%. Math scores increased 14% points and reading scores increased 9% percentage points in the first year.

Top Workplace in 2010, 2011, 2012, 2013


  • #9 in large sized companies


  • #14 in large sized



  • #15 in mid-sized companies


  • #33 in mid-sized companies


US News and World Report


  • Mastery’s Lenfest and Shoemaker Campuses were honored with Bronze Badges
  • Thomas Campus earned a silver medal award and its rankings included: 
#4 of 61 Charter High Schools in PA 
#58 of all 687 High Schools in PA 
#2000 of all High Schools in the U.S.



  • Lenfest chosen as a Bronze Medal School


PennCan- Pennsylvania Campaign for Achievement

Top 10 Elementary Performance Gains – Overall PA

  • #3 Hardy Williams Academy Mastery Charter School


Top 10 Elementary Achievement for Black Students – Overall PA

  • #10 Hardy Williams Academy Mastery Charter School 


Top 10 Middle School Achievement for Black Students – Overall PA

  • #6 Thomas Campus
  • #10 Shoemaker Campus


Top 10 High School Performance for Black Students – Overall PA

  • #7 Shoemaker Campus
  • #10 Lenfest Campus


United States Department of Education


  • Thomas Campus named exemplar school


Effective Practice Incentive Community (EPIC)

EPIC (Effective Practice Incentive Community) is a program that rewards educators in schools making significant student achievement gains who agree to share their effective practices so others may learn from their successes.


  • Shoemaker EPIC Gold Award 
  • Lenfest EPIC Silver Award

2009- 2010

  • Shoemaker EPIC Gold Award
  • Lenfest EPIC Silver Award
  • Thomas EPIC Silver Award


  • Thomas EPIC Silver Award