Public school / Primary
J. Marion Roynon Elementary
San Dimas, California
- NCES ID
- 060561000510
- District
- Bonita Unified
- School type
- Regular
- Title I
- Not designated
J. Marion Roynon Elementary is a public primary school in San Dimas, California, run by Bonita Unified. It enrols 841 students — the 12667th largest of 10,418 public schools in California.
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
841
Teachers
34.0
Students per teacher
24.7
Free or reduced-price lunch
44.0%
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.
Free or reduced-price lunch
Share of students eligible for free or reduced-price meals — the most widely used proxy for concentrated poverty in a school. Districts under community eligibility report all students as eligible, which inflates the figure and makes cross-district comparison unreliable.
Within Bonita Unified
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.
- 1Bonita High1,883 students
- 2Ramona Middle1,304 students
- 3San Dimas High1,251 students
- 4Lone Hill Middle912 students
- 5J. Marion Roynon Elementary841 students
- 6Arma J. Shull Elementary630 students
- 7Oak Mesa Elementary566 students
- 8Gladstone Elementary515 students
- Enrollment+77.4%
- Teachers+61.9%
- Students per teacher+11.8%
- Free or reduced-price lunch−35.2%
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