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Email BoardCastlebay Lane Charter
19010 Castlebay Lane, Porter Ranch, CA 91326-1005
Summary
Castlebay Lane Charter is a good school.
Reading and math results average to the 89th percentile among comparable California schools.
72.8% of students met California's reading standard, and it is trending up slightly.
72.0% of students met California's math standard, which is strong statewide but is trending down slightly.
Proficiency stats
| Current Reading Proficiency | 72.8% |
| Current Math Proficiency | 72.0% |
| Reading State Rank | 554/4,657 (88th percentile) |
| Math State Rank | 513/4,657 (89th percentile) |
School information
| Student / Teacher Ratio | 24:1 |
| Student enrollment (2024–25) | 666 |
| Low-Income Students | 176 (26.9%) |
| English Learners | 25 (3.8%) |
School Website
Great Schools
Niche
Ed-Data
CAASPP| Admissions | Open enrollment |
|---|---|
| Charter school | Yes |
| Magnet school | No |
Test score trends
Reading fell 1.6 points from last year and rose 0.7 points over the full period. Math rose 0.7 points from last year and fell 2.3 points over the full period.
•Math -2.3 percentage points (2024–2026)Reading Proficiency Scores
2026 state test results
Race and Ethnicity
Most students in every reported group meet the reading standard. Asian and Two or more races students have the strongest results.
Distribution of Scores by Grade
The share meeting the reading standard ranges from 68.5% to 77.3% across the grades shown. Overall, the school’s reading results rank in the top 12% among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
The 21.2-point reading income gap is slightly wider than the 19.8-point gap at a typical California K–5 school. It narrowed slightly over the period shown.
•English Learners vs English Native
Results for both language groups are unavailable, so a current reading gap cannot be calculated.
Math Proficiency Scores
2026 state test results
Race and Ethnicity
Asian students have the strongest math results at about 85% proficiency. The other reported groups range from about 53% to 76%.
Distribution of Scores by Grade
The share meeting the math standard ranges from 70.1% to 73.5% across the grades shown. Overall, the school’s math results rank in the top 12% among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
The 12.6-point math income gap is narrower than the 20.0-point gap at a typical California K–5 school. It narrowed over the period shown.
•English Learners vs English Native
Results for both language groups are unavailable, so a current math gap cannot be calculated.
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 Castlebay Lane Charter compare within the district?
Castlebay Lane Charter is No. 35 in reading and No. 34 in math proficiency among the 424 K–5 schools in Los Angeles Unified with 2026 results.
Explore the district’s schoolsHow does Castlebay Lane Charter rank in California?
Castlebay Lane Charter ranks No. 554 of 4,657 in reading and No. 513 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 Castlebay Lane Charter compare within the district?
Low-income students here rank No. 49 in reading and No. 24 in math among 424 K–5 district schools with reportable 2026 results for this group. 59.0% meet the reading standard and 63.8% meet the math standard.
See results by student groupHow does Castlebay Lane Charter compare with other schools in Los Angeles County?
Castlebay Lane Charter is No. 98 in reading and No. 91 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 |
|---|---|---|
| Castlebay Lane CharterThis school | 72.0% | 72.8% |
| Academia Moderna | 19.5% | 20.5% |
| Academy for Enriched Sciences | 84.2% | 83.5% |
