English: Proficient or Advanced
Grades 3–5, spring 2026
- Castlebay Lane Charter
- 73%Advanced: 46%
- Porter Ranch Community
- 75%Clearly ahead: Advanced: 56%
- California
- 46%Advanced: 24%
Compare · elementary
Castlebay Lane Charter and Porter Ranch Community
Both are in the top quarter among California elementary schools we score (spring 2026 tests). English (reading and writing) and math are close between the two.
Castlebay Lane Charter 90th
Porter Ranch Community 95th
California’s public elementary schools · 1 dot = 1 in 100
Needs Support25 in 100Developing25 in 100Solid25 in 100Strong25 in 100
Castlebay Lane Charter 90th
Porter Ranch Community 95th
California’s public elementary schools · 1 dot = 1 in 100
Needs Support25 in 100Developing25 in 100Solid25 in 100Strong25 in 100
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How do their test results compare?
From spring 2026, the state calls its top two levels “Proficient or Advanced” (formerly “Met or Exceeded”). marks a figure clearly ahead of the other school. California: the same grades statewide.
Math: Proficient or Advanced
Grades 3–5, spring 2026
- Castlebay Lane Charter
- 72%Advanced: 44%
- Porter Ranch Community
- 76%Clearly ahead: Advanced: 52%
- California
- 42%Advanced: 21%
Do students show up and stay in class?
Average school: the average California elementary school we score.
Chronically absent
Missed 10% or more of school days · 2025–26 school year
- Castlebay Lane Charter
- 15 in 100104 of 682 students
- Porter Ranch Community
- 12 in 100163 of 1,413 students
- Average school
- 17 in 100
Suspended at least once
2025–26 school year
- Castlebay Lane Charter
- 0.1%1 of 689 students enrolled at any point in the year
- Porter Ranch Community
- 0.1%2 of 1,427 students enrolled at any point in the year
- Average school
- 1.6%
How did results compare with what the state expected?
The state’s matched growth measure compares each student’s results with what the state expected from their earlier scores.
State growth measure, points vs expected
Spring 2025 · students with scores in both years
- Castlebay Lane Charter
- +18 pts English +20 pts mathGrades 4–5 · The state calls them Accelerated in English and Exceptional in math · 193 students
- Porter Ranch Community
- +13 pts English +13 pts mathGrades 4–8 · The state calls both Accelerated · 611 students in English, 608 in math
How are they scored, who runs them, and how big are they?
Percentile among California elementary schools, with the Scope Score
Spring 2026 tests
- Castlebay Lane Charter
- 90th percentileStrongScope Score 66
- Porter Ranch Community
- 95th percentileStrongScope Score 74
A charter’s authorizer decides whether its charter is renewed when the term ends.
Who runs the school
- Castlebay Lane Charter
- Los Angeles Unified (an affiliated charter)
- Porter Ranch Community
- Los Angeles Unified
Charter approved by, and when the current term ends
- Castlebay Lane Charter
- Los Angeles UnifiedTerm ends June 30, 2031
- Porter Ranch Community
- Not a charter
Teachers in their first year
2024–25 school year
- Castlebay Lane Charter
- 4%
- Porter Ranch Community
- 4%
Average years of teaching experience
2024–25 school year
- Castlebay Lane Charter
- 16
- Porter Ranch Community
- 10
Size, grades and staffing help you picture the school. A staffing ratio is not class size.
Students per teacher
Public schools: federal school directory, 2024–25 · a staffing ratio, not class size
- Castlebay Lane Charter
- 24
- Porter Ranch Community
- 24
Grades offered
- Castlebay Lane Charter
- TK–5
- Porter Ranch Community
- TK–8
Sources and definitions
Test results are from California’s state tests (CAASPP), spring 2026: the share of students tested in the level’s grades who scored Proficient or Advanced, per subject. California’s figure is our combination of the state’s published rows for the same grades. A ✓ marks a figure ahead of the others by more than twice the margin of error (on chronic absence, ahead means lower). Chronic absence and suspensions are the California Department of Education’s 2025–26 counts; “chronically absent” means a student missed 10% or more of school days. The absence and suspension references are the average California school we score at these schools’ level, each school counted once. The state growth measure is points above or below what the state expected from these students’ earlier scores, for grades 4–8, from the state’s spring 2025 release. Students per teacher is from the federal school directory, 2024–25, which also lists enrollment: Castlebay Lane Charter 666; Porter Ranch Community 1,312. Teacher experience is the California Department of Education’s staffing file for the school year shown (teachers only). A charter’s authorizer is from CDE’s charter term file and its term end from CDE’s Charter School Database. LAUSD’s affiliated charters are the ones its 2027–28 Choices brochure lists.