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EDITION 2026.08 /8,821 RECORDS / PUBLIC DOMAIN

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Public school / Primary / Charter

Mastery Prep Elementary Cs

Philadelphia, Pennsylvania

NCES ID
420090007662
School type
Regular
Title I
Not designated

Mastery Prep Elementary Cs is a public primary school in Philadelphia, Pennsylvania, run by Mastery Prep Elementary Cs. It enrols 549 students — the 31679th largest of 2,956 public schools in Pennsylvania.

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Reported figures, 2022–2023

The Common Core of Data is a directory collection: it records size and staffing, not achievement. Nothing here says whether a school is good.

Enrollment

549students

31679th nationally, tied with 114

Teachers

31.0FTE

39703rd nationally, tied with 2,128

Students per teacher

17.7students

68749th nationally, tied with 541

How these figures are defined

Enrollment

Students reported in the autumn headcount. Size is not quality — it is here because it is the figure every other one has to be read against, and because a school of 90 and a school of 4,000 are not comparable on anything else.

Teachers

Classroom teachers in full-time equivalents, so a half-time teacher counts as 0.5. Non-teaching staff are excluded.

Students per teacher

Enrollment divided by teacher FTE. It is not class size: it counts every teacher against every student, including specialists who never take a full class. A school can have 15 students per teacher and 30 in the room.

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Within Mastery Prep Elementary Cs

Schools in the same district, which is the comparison the data actually supports — a peer group defined by who runs them rather than by whichever names sort nearby.

Distance from the state median

Baseline: Pennsylvania median across 2,956 public schools. Bars right of the rule are above it.

  • Enrollment+7.6%
  • Teachers−11.4%
  • Students per teacher+31.1%
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Sources & licence

Collected by the National Center for Education Statistics. Nothing here is edited, interpolated or estimated.

Provenance

National Center for Education Statistics
Common Core of Data — school and district directory
Current · as of August 17, 2026U.S. Public Domain (NCES)

Collected and published by NCES; retrieved through the Urban Institute Education Data Portal, which republishes the NCES files unchanged.

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Data as of September 1, 2022.