NCES CCD 2024-25 10 schools CA

Best-Resourced Schools in Diamond Bar, CA

Compiled from official source data by .

10 public K-12 schools in Diamond Bar from NCES Common Core of Data: enrollment, grade span, demographics, and Civil Rights Data Collection statistics for every active campus.

PlainSchools home → About this data
10
Schools
8,396
Students
35.7/100
Avg Resource Index
25.5:1
Avg Student-Teacher Ratio

National city placement

Lean reported-resource profile

According to NCES CCD 2024-25, Diamond Bar has more public-school enrollment than 75% of the 4,487 US cities in this directory. Diamond Bar's average Resource Investment Index falls in the lower portion of the 4,487-city comparison set. The index is a resource snapshot, not an academic grade: it reflects the federal staffing, counselor, gifted-program, and attendance fields available for local campuses. The most useful next step is to open the individual schools below and identify which component is pulling each score down, because the same city average can hide very different campus-level constraints.

The school portfolio is elementary-weighted

7 of Diamond Bar's 10 listed schools are elementary campuses. That composition means citywide enrollment and staffing averages are influenced more by early-grade operating patterns than by the city's 2 middle and 1 high-school records. Families comparing later grades should rely on those individual rows rather than the all-school mean.

A small portfolio contains radically different campus scales

Diamond Bar lists only 10 schools, yet reported enrollment runs from 251 to 2,563 students, a 10-fold range. In a portfolio this compact, the smallest record may be a specialized or nonstandard setting rather than a miniature version of the largest campus. That distinction affects how ratios and program fields should be read. Compare similarly configured grade levels first; combining the extremes into one city average conceals more than it explains.

City enrollment
Top 25%
School count
Top 41%
Resource Index average
28th percentile
Teacher staffing
1st percentile

Diamond Bar High accounts for 30.5% of all Diamond Bar public-school enrollment

That dominant concentration means Diamond Bar-wide averages can mask substantial variation outside the largest entity. Grade level: High. The share measures enrollment concentration only; it does not establish how districts allocate programs, capital, or staff. Enrollment-weighted aggregates give this entity more weight than any smaller peer, while an unweighted entity average treats every record equally.

Source: NCES Common Core of Data NCES Common Core of Data

Diamond Bar school enrollment varies 10× across entities

Diamond Bar school enrollment ranges from 251 students (lowest) to 2,563 students (highest), a spread of 2,312 students. That spread reflects typical urban portfolio variation between specialty programs and large neighbourhood schools. Per-school staffing and program breadth can differ sharply at opposite ends of that enrollment range, so the city average should not be treated as a typical campus.

Source: NCES Common Core of Data NCES Common Core of Data

Diamond Bar student-teacher ratio is 25.5:1 — well above typical (typically associated with unusually large scale or acute resource constraints)

student-teacher ratio is the simplest comparative metric but it does not capture the full picture: the ratio counts FTE classroom teachers against total enrollment, push-in specialists, English-language aides, special-education co-teachers, and counselors are not included in most reporting Values this far above typical often signal acute resource constraints or a structurally different scale than most peers — worth reading alongside the underlying counts, not the ratio alone.

Source: NCES Common Core of Data, Public School Universe NCES Common Core of Data, Public School Universe

# School Score
1. Pantera Elementary 50
2. Diamond Bar High 48
3. Chaparral Middle 41
4. Lorbeer Middle 41
5. Armstrong Elementary 37
6. Golden Springs Elementary 31
7. Maple Hill Elementary 30
8. Evergreen Elementary 27
9. Quail Summit Elementary 26
10. Castle Rock Elementary 26

Most racially and ethnically mixed schools in Diamond Bar

Ranked by the Simpson student-body diversity index (0-100) from NCES race and ethnicity data, where higher means a more evenly mixed student body. It measures mix, not quality.

  1. 1 Armstrong Elementary 59.8/100
  2. 2 Golden Springs Elementary 49.4/100
  3. 3 Pantera Elementary 49.2/100
  4. 4 Castle Rock Elementary 46.6/100
  5. 5 Evergreen Elementary 45.9/100

What do families ask about schools in Diamond Bar?

Which Diamond Bar school has the highest Resource Investment Index? ▼

Pantera Elementary has the highest Resource Investment Index among the Diamond Bar schools in this federal-data comparison at 50/100. The index summarizes reported staffing, counseling, gifted-program, and attendance inputs; it is not an academic rating.

How many schools are in Diamond Bar, CA? ▼

Diamond Bar has 10 public schools with a total enrollment of 8,396 students. Average student-teacher ratio: 25.5:1.

Other Cities in California

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574 schools
San Diego
284 schools
San Jose
234 schools
Sacramento
197 schools
Fresno
180 schools
Bakersfield
146 schools

Side-by-side: Compare any two schools or districts in California →

Data from NCES Common Core of Data (CCD) 2024-25 and Civil Rights Data Collection (CRDC) 2021-22. The Resource Investment Index uses reported student-teacher ratio, counselor access, gifted programs, and attendance; it is not an academic rating. Cities must include at least five schools to be listed. This public-data comparison is for informational purposes: verify current enrollment, attendance boundaries, and programs with the school district before acting. See the guide to understanding NCES data.