Is this your school? Email the board to prioritize reading!
Email BoardLorbeer Middle
501 Diamond Bar Boulevard, Diamond Bar, CA 91765-2002
Summary
Lorbeer Middle is underperforming.
Reading and math results average to the 58th percentile among comparable California schools.
50.5% of students met California's reading standard, and it is trending up.
Math is weaker: 32.7% of students met California's math standard, but it is slowly trending up.
Proficiency stats
| Current Reading Proficiency | 50.5% |
| Current Math Proficiency | 32.7% |
| Reading State Rank | 476/1,204 (61st percentile) |
| Math State Rank | 542/1,204 (55th percentile) |
School information
| Student / Teacher Ratio | 24:1 |
| Student enrollment (2024–25) | 688 |
| Low-Income Students | 511 (74.3%) |
| English Learners | 80 (11.6%) |
School Website
Great Schools
Niche
Ed-Data
CAASPP| Admissions | Open enrollment |
|---|---|
| Charter school | No |
| Magnet school | No |
Test score trends
Reading rose 3.2 points from last year and rose 6.4 points over the full period. Math rose 2.1 points from last year and rose 4.8 points over the full period.
•Math +4.8 percentage points (2024–2026)Reading Proficiency Scores
2026 state test results
Race and Ethnicity
Asian and Filipino students have the strongest results.
Distribution of Scores by Grade
The share meeting the reading standard ranges from 49.4% to 51.7% across the grades shown. Overall, the school’s reading results rank in the top 40% among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
The 22.6-point reading income gap is slightly wider than the 18.6-point gap at a typical California 7–8 school. It widened over the period shown.
•English Learners vs English Native
6.0% of English learners meet the reading standard, compared with 53.4% of English-only students. The gap widened as English-learner results rose and English-only results rose.
•Math Proficiency Scores
2026 state test results
Race and Ethnicity
Asian students have the strongest math results at about 68% proficiency. The other reported groups range from about 24% to 67%.
Distribution of Scores by Grade
The share meeting the math standard ranges from 32.4% to 33.0% across the grades shown. Overall, the school’s math results rank in the top 46% among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
The 23.7-point math income gap is wider than the 18.4-point gap at a typical California 7–8 school. It widened slightly over the period shown.
•English Learners vs English Native
9.6% of English learners meet the math standard, compared with 32.0% of English-only students. The gap widened as English-learner results rose and English-only results rose.
•Progress as students move up
2023–2026
How we compare income gaps
“Typical” means the median gap across 301 schools for reading and 302 for math. The comparison uses 2026 California 7–8 schools with at least 20 tested students in each income group and a reported low-income student population. Each school counts once. Its gap is non-low-income proficiency minus low-income proficiency, including negative gaps. California state test data
Understanding this school
How does Lorbeer Middle rank in California?
Lorbeer Middle ranks No. 476 of 1,204 in reading and No. 542 of 1,204 in math for 2026. These proficiency rankings compare California schools in the same grade-level category.
How does Lorbeer Middle compare with other schools in Los Angeles County?
Lorbeer Middle is No. 18 in reading and No. 20 in math proficiency among the 29 7–8 schools in Los Angeles County with 2026 results.
Explore schools in Los Angeles County