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Email BoardSierra Elementary
747 West Avenue J-12, Lancaster, CA 93534-4933
Summary
Sierra Elementary is badly underperforming.
Reading and math results average to the 3rd percentile among comparable California schools.
Only 16.0% of students met California's reading standard, and it is slowly trending down.
Math is weaker: 10.7% of students met California's math standard, but it is trending up slightly.
Proficiency stats
| Current Reading Proficiency | 16.0% |
| Current Math Proficiency | 10.7% |
| Reading State Rank | 4,527/4,657 (3rd percentile) |
| Math State Rank | 4,548/4,657 (2nd percentile) |
School information
| Student / Teacher Ratio | 19:1 |
| Student enrollment (2024–25) | 707 |
| Low-Income Students | 656 (92.8%) |
| English Learners | 64 (9.1%) |
School Website
Great Schools
Niche
Ed-Data
CAASPP| Admissions | Open enrollment |
|---|---|
| Charter school | No |
| Magnet school | No |
Test score trends
Reading fell 6.0 points from last year and fell 3.1 points over the full period. Math rose 1.3 points from last year and rose 0.7 points over the full period.
•Math +0.7 percentage points (2024–2026)Reading Proficiency Scores
2026 state test results
Race and Ethnicity
White and Hispanic or Latino students have the strongest results.
Distribution of Scores by Grade
The share meeting the reading standard ranges from 13.8% to 19.0% across the grades shown. Overall, the school’s reading results rank No. 4,527 of 4,657 among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
The 1.7-point reading income gap is narrower than the 19.8-point gap at a typical California K–5 school. It narrowed over the period shown.
•English Learners vs English Native
0.0% of English learners meet the reading standard, compared with 14.4% of English-only students. The gap widened as English-learner results fell and English-only results fell.
•Math Proficiency Scores
2026 state test results
Race and Ethnicity
Hispanic or Latino students have the strongest math results at about 12% proficiency. The other reported groups range from about 5% to 5%.
Distribution of Scores by Grade
The share meeting the math standard ranges from 9.3% to 13.0% across the grades shown. Overall, the school’s math results rank No. 4,548 of 4,657 among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
Low-income students are 5.1 points ahead in math. It widened slightly over the period shown.
•English Learners vs English Native
0.0% of English learners meet the math standard, compared with 9.0% of English-only students. The gap widened as English-learner results fell and English-only results rose.
•Progress as students move up
2023–2026
How we compare income gaps
“Typical” means the median gap across 1,832 schools for reading and 1,839 for math. The comparison uses 2026 California K–5 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 Sierra Elementary compare within the district?
Sierra Elementary is No. 7 in both reading and math proficiency among the 8 K–5 schools in Lancaster Elementary with 2026 results.
Explore the district’s schoolsHow does Sierra Elementary rank in California?
Sierra Elementary ranks No. 4,527 of 4,657 in reading and No. 4,548 of 4,657 in math for 2026. These proficiency rankings compare California schools in the same grade-level category.
How do low-income students at Sierra Elementary compare within the district?
Low-income students here rank No. 7 in reading and No. 6 in math among 8 K–5 district schools with reportable 2026 results for this group. 15.9% meet the reading standard and 11.0% meet the math standard.
See results by student groupHow does Sierra Elementary compare with other schools in Lancaster?
Sierra Elementary is No. 7 in both reading and math proficiency among the 8 K–5 schools in Lancaster with 2026 results.
Explore schools in LancasterHow does Sierra Elementary compare with other schools in Los Angeles County?
Sierra Elementary is No. 777 in reading and No. 778 in math proficiency among the 780 K–5 schools in Los Angeles County with 2026 results.
Explore schools in Los Angeles CountyWhich schools should I compare?
Schools serving K–5 in the same district.
| School | Math | Reading |
|---|---|---|
| Sierra ElementaryThis school | 10.7% | 16.0% |
| Discovery | 19.6% | 29.1% |
| El Dorado Elementary | 9.5% | 12.2% |
