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Gaspar De Portola Charter Middle

Grades 6-8Charter2024–25 data
Los Angeles UnifiedTarzana, Los Angeles County91356
📍 18720 Linnet Street📞 (818) 654-3300🌐 Website
Charter school — publicly funded, independently operated, open enrollment via lottery. Learn more
Solid
68/100
Solid — 91st percentile statewide
#151 of 1,714 CA middle schools
↑ 3.9 pts since 2019
🌱 Building Momentum

Every school has strengths the data doesn’t fully capture. Visit and see for yourself. Resources alone aren't driving results yet — deeper challenges may be at play

School Climate
84% of students attend consistently
Chronic absenteeism: 16.0% (state avg: 19.1%)
"Attend consistently" means missing ≤10% of school days (the chronic absenteeism threshold).
Minimal suspensions
0.8% suspension rate (state avg: 4.2%)
Share of students who received at least one suspension during the year.
Source: California Dept. of Education, 2024–25See breakdown by student group →

What the numbers actually mean

Most rating sites report "64% proficient" and stop there. We think that number deserves more context — here's what we found when we looked deeper:

43.3% of students exceeded standard? Level 4 on California's CAASPP Smarter Balanced Assessment — the state defines four levels: Not Met, Nearly Met, Met, and Exceeded. while 20.7% met it. That exceeded rate is 26.0 points above the state average of 17.3%. That's 24.5 points above the Los Angeles Unified district average of 18.8%. The gap between "met" and "exceeded" can reveal how much a school's curriculum challenges students beyond proficiency.

CDE CAASPP 2025
Gaspar De Portola Charter Middle
43%
21%
California average
17%
22%
ExceededMet onlyBelow

We tracked the same cohort across years (2023 G6 → 2025 G8): students gained 57 scale score points? Pseudo-cohort tracking: we compare this school's G6 class from a prior year to the G8 class in the current year. Same school, same cohort aged forward. Uses SBAC scale scores designed for cross-year comparison., suggesting this school is adding measurable value over time.

SchoolScope cohort tracking · Same cohort tracked across years using SBAC scale scores — stronger than single-year cross-grade comparison

California's Dashboard shows ELA performance increased and Math increased year-over-year.

Chronic absenteeism? Missing 10%+ of enrolled school days. This is an official California Dashboard accountability indicator. is 16.0%, better than the state average of 19.1%.

CDE Attendance 2025

Data you won't find on other sites: School-level per-pupil spending (not just district averages) · Current-year 2025 data direct from CDE · The exceeded vs. met split that most rating sites collapse into one number

Why the exceeded vs. met split matters → · Scope Score is SchoolScope's analysis of CDE data — not an official CDE rating. How we built this score (and what it misses) →

No single score captures a school. This is a starting point — visit, ask questions, trust your instincts.

▸ What this score doesn't capture
  • — Teaching quality, classroom culture, and how teachers connect with students
  • — Arts, athletics, extracurriculars, and enrichment programs
  • — How well the school serves students with IEPs or gifted learners
  • — Parent community engagement and satisfaction
  • — Whether the curriculum aligns with your family's values

Most of our data is updated once per year and may reflect the prior school year.

Before you visit
Questions worth asking and signals worth checking
What to verify
⚠Score is solid but proficiency rates dropped 6.9 points from G6 to G8. Strong overall, but fewer students hit the benchmark in later grades — could reflect harder standards, cohort differences, or a curriculum gap worth asking about.
Who this school is great for
✓Students already performing at or above grade level — 43% of students here push past the standard
✓Families where consistent attendance and school culture matter — absenteeism is well below state average
✓Families looking for a low-discipline-incident environment
△Worth checking: Students needing sustained momentum — proficiency dips between grades; Families wanting small-class-size environments — this is a larger school
These reflect data patterns, not guarantees. Your child's experience will depend on their teacher, grade, and classroom — things no score captures.
Score Factors
Academic Performance
✓Exceeded standard: 43.3%
26.0pp above state avg (state avg 17.3%)
43% weight

Exceeded rate gets the highest weight because it separates schools that clear the bar from those that raise it.

Limitation: Reflects tested students only — opt-out rates are not published by CDE.

CDE CAASPP 2025
✓Met or exceeded: 64.0%
24.5pp above state avg (state avg 39.5%)
22% weight

Overall proficiency provides the broadest measure of academic achievement.

Limitation: Combines ‘met’ and ‘exceeded’ — the gap between them matters more than either alone.

CDE CAASPP 2025
Holding back
▼Growth (G6→G8): -6.9pp
Scores decline across grades (state avg +0.8pp)
15% weight

Growth measures what the school adds, not what families bring. When available, we track the same cohort across years for a stronger signal.

Limitation: Cohort tracking is school-level (not individual students) — transfers and demographic shifts can affect results. Falls back to cross-sectional comparison when historical data is unavailable.

SchoolScope derived
School Climate
✓Chronic absenteeism: 16.0%
3.0pp below state avg (state avg 19.1%)
10% weight

Absenteeism reflects school culture and family engagement — an official CA Dashboard accountability indicator.

Limitation: 10% threshold is the same for all schools regardless of demographics or geography.

CDE Attendance 2025
✓Suspension rate: 0.8%
3.4pp below state avg (state avg 4.2%)
5% weight

Low suspension rates correlate with positive school culture and restorative practices.

Limitation: Schools may differ in reporting practices — some underreport to improve metrics.

CDE Discipline 2025
We make judgment calls about what matters. We believe exceeded scores reveal more than proficiency alone, and that growth matters more than raw test results. Reasonable people could weight these differently — and that's fine. The factors above show exactly what we weighted and why, so you can decide where you agree and where you'd adjust. The middle school Scope Score uses 5 dimensions. How we built this score (and what it misses) →

The Scope Score emphasizes academic performance. It weights test proficiency, the exceeded-vs-met gap, and growth trajectory most heavily. If your family prioritizes arts, athletics, school culture, or teaching philosophy, this score captures some of that indirectly (through absenteeism and suspension) but not all of it. Different families should weight these dimensions differently — the score factors above let you see exactly what drives this number.

How to use this
  • –Use for long-term academic patterns, not this week's classroom experience
  • –Verify with a recent visit — scores can't capture a school mid-transformation
  • –Combine with local context — talk to parents, attend a school board meeting, trust your gut
Community Profile
Context — not part of the Scope Score

Student demographics

Hispanic31.3%
White44.0%
Asian11.3%
Black3.6%
Other9.8%
GenderFemale 46.5%Male 53.5%
Resources & Access
Enrollment
1,403
543 above CA avg (~860)
Free/Reduced Lunch
46%
18pp below CA avg (64%)
Student-Teacher Ratio
23:1
2 more students per teacher than CA avg
Per-Pupil Spending
$18,808
District avg: $18,180 · CA avg: $14,815 · School-level · CDE ESSA
Teacher Salary Range
$60,420 – $122,706
District schedule · CA median ~$98K
At Gaspar De Portola Charter Middle in Tarzana, 54.4% of low-income students met or exceeded the ELA standard in 2025, compared to 40.9% district-wide and 38.2% statewide. Gaspar De Portola Charter Middle outperforms its district average for low-income students by 13.5 percentage points in ELA. Other subgroups: Low-Income students (41.7% Math proficient); White students (77.4% ELA proficient). The largest proficiency gap is 55.5 percentage points for english learner students. Data source: California Department of Education, CAASPP 2024-25. 671 students tested.
Equity Gaps
Absenteeism · Disabilities+8.3pp
24.3% vs 16.0% overall · n=247
ELA · English Learner−55.5pp
13.8% vs 69.3% overall · n=58
3 more gaps by subject
ELA Exceeded · English Learner−39.5pp
1.7% vs 41.2% overall · n=58
Math · English Learner−48.6pp
10.3% vs 58.9% overall · n=89
Math Exceeded · English Learner−41.8pp
3.8% vs 45.5% overall · n=89

Subgroups with fewer than 15 students are excluded for privacy. Gaps of less than 3 percentage points are not shown.

Subgroup Proficiency
Low-Income679 tested
ELA 54.4%·Math 41.7%· +13.5pp vs district
White581 tested
ELA 77.4%·Math 70.5%· +8.6pp vs district
Hispanic467 tested
ELA 50.8%·Math 36.3%· +9.7pp vs district

Weighted average across tested grades. Subgroups with fewer than 15 students excluded. Data: CDE CAASPP 2024-25.

Subgroup Growth by Grade
Change in proficiency from lowest tested grade. Shows which groups are gaining ground.

Low-income student ELA proficiency falls by 10.0pp from grade 6 to grade 8 at this school. District average: -0.3pp.

Subgroups with fewer than 10 tested students per grade are not shown.

Funding Breakdown
Instruction 55%Support 40%Other 4%

Source: NCES F-33 (2019–2020) · Full district breakdown →

Neighborhood Context
Median Income
$106K
$21K above CA median
Median Home Value
$1.16M
$499K above CA median
Bachelor's+
54%
19pp above CA avg
Whole Child
Teacher experience, college/career readiness, and more. Context only — never part of the Scope Score.
Teacher Experience
16.1 years avg experience
61 teachers · 2% first-year · 3% second-year
Teacher Credentials
80% fully credentialed
4.1% on intern/emergency permit

Source: CDE SARC, 2024-25

Community Profile provides context about who attends this school and the resources available. These factors are never part of the Scope Score. Learn why →

5-year trend

6468'19'22'23'24'25
↑ 3.9 points since 2019
Rank: #486 → #346 → #212 → #159 → #151Exceeded: 32% → 35% → 36% → 40% → 43%
2019 · 2022 · 2023 · 2024 · 2025 · No testing 2020–21 (COVID) · Scope Score based on CAASPP, absenteeism & suspension data

How Gaspar De Portola Charter Middle compares

Gaspar De Portola Charter Middle vs. California averages — 2025 CAASPP data
MetricThis schoolCA avg
Exceeded Standard43.3%17.3%
Met or Exceeded64.0%39.5%
Chronic Absenteeism16.0%19.1%
Suspension Rate0.8%4.2%
Cohort GrowthAbove avgAverage

Source: California Department of Education CAASPP 2025 · Analyzed by SchoolScope

Grade trajectory

How proficiency compares across grade levels this year (different students, same test year)

ELA Trajectory
72.8%68.6%G6G7G8
Math Trajectory
63.6%54.1%G6G7G8

ELA scores by grade

GradeTestedExceededMetNearly MetNot MetMet+Above
6th52344.2%28.7%12.4%14.7%72.8%
7th45840.2%26.0%15.3%18.6%66.2%
8th39839.2%29.4%14.8%16.6%68.6%

Math scores by grade

GradeTestedExceededMetNearly MetNot MetMet+Above
6th53149.3%14.3%16.0%20.3%63.6%
7th46442.7%15.9%15.9%25.4%58.6%
8th40144.4%9.7%17.0%28.9%54.1%

Science scores by grade

GradeTestedExceededMetNearly MetNot MetMet+Above
8th41623.1%26.9%35.6%14.4%50.0%

416 students tested · CAST is tested in grades 5, 8, and once in high school — not annually like ELA/Math. Not included in the Scope Score. · Data source: CDE CAST 2025

K-12 Feeder Path

Feeder patterns derived from NCES attendance boundary data. Boundaries are approximate and may have changed — verify with your school district for current assignments.

Schools nearby

Private alternatives nearby

Private schools within ~10 miles. These schools do not participate in state testing and cannot be scored or ranked.

Mirman School
Mulholland Dr · Nonsectarian · Grades Pre-K-8 · 376 students
6:1Private4.2 mi
Valley School
Sherman Way · Nonsectarian · Grades Pre-K-8 · 287 students
10:1Private4.4 mi
Woodcrest School
Tampa Ave 101A · Nonsectarian · Grades Pre-K-8 · 267 students
11:1Private1.2 mi
Westmark School
Louise Ave · Nonsectarian · Grades 2-12 · 240 students
5:1Private1.8 mi
Berkeley Hall School
Mulholland Dr · Nonsectarian · Grades Pre-K-8 · 202 students
6:1Private4.4 mi
How to get into a charter school in LA →

Frequently asked questions

Is Gaspar De Portola Charter Middle a good middle school?
Gaspar De Portola Charter Middle has a Scope Score of 68 out of 100, placing it in the 91st percentile of California middle schools and ranked #151 statewide. 43.3% of students exceeded the state standard on the 2025 CAASPP assessment, which is 26.0 percentage points above the California average of 17.3%. The Scope Score weights five dimensions: the exceeded-vs-met split (45%), proficiency (25%), grade-level growth (15%), chronic absenteeism (10%), and suspension rate (5%). Data source: California Department of Education CAASPP 2025, analyzed by SchoolScope.
What are Gaspar De Portola Charter Middle's CAASPP test scores?
On the 2025 CAASPP Smarter Balanced Assessment, 64.0% of students at Gaspar De Portola Charter Middle met or exceeded the state standard in ELA and Math combined, and 43.3% exceeded it. The gap between those numbers matters: 20.7% of students are at the proficiency floor, while 43.3% pushed past it. Most rating sites report only the combined "proficient" number. SchoolScope surfaces the exceeded-vs-met split because it reveals whether a school's curriculum challenges students beyond minimum proficiency or paces toward it. 2,775 student-subject combinations were assessed.
How does Gaspar De Portola Charter Middle rank in California?
Gaspar De Portola Charter Middle ranks #151 among California middle schools by Scope Score, placing it in the 91st percentile. This ranking is based on a weighted composite of 2025 CAASPP test performance (exceeded and met rates), grade-level growth (Grade 6 to grade 8 growth), chronic absenteeism, and suspension rate. Unlike single-number ratings, the Scope Score shows what drives the ranking so parents can decide what matters most to their family. See full methodology.
Is Gaspar De Portola Charter Middle getting better or worse?
Based on 2025 CAASPP data, proficiency at Gaspar De Portola Charter Middle decreases by 6.9 percentage points from Grade 6 to grade 8 growth. This downward pattern doesn't necessarily mean the school is failing — it can reflect cohort differences, demographic shifts, or curriculum changes. A campus visit and conversation with teachers can reveal what the numbers can't. Growth trajectory is weighted at 15% in the middle Scope Score because it measures what the school does, not just who walks in the door.
What is the attendance and school culture like at Gaspar De Portola Charter Middle?
16.0% of students at Gaspar De Portola Charter Middle are chronically absent (missing 10% or more of school days), which is better than the California average of 19.1%. The suspension rate is 0.8%, indicating a low-discipline-incident environment. SchoolScope includes these culture metrics in the Scope Score because they reflect day-to-day school experience in ways test scores alone cannot.
How does Gaspar De Portola Charter Middle compare to other schools in Tarzana?
Gaspar De Portola Charter Middle scores 68/100 (91st percentile) among California middle schools. To compare with nearby schools, SchoolScope shows the same metrics side by side: exceeded rate, proficiency, growth trajectory, and school culture indicators. The school serves 1,403 students. Use the schools in Tarzana page or the map view to compare all middle schools nearby.
How does Gaspar De Portola Charter Middle serve low-income and underrepresented students?
At Gaspar De Portola Charter Middle in Tarzana, 54.4% of low-income students met or exceeded the ELA standard in 2025, compared to 40.9% district-wide and 38.2% statewide. Gaspar De Portola Charter Middle outperforms its district average for low-income students by 13.5 percentage points in ELA. Other subgroups: Low-Income students (41.7% Math proficient); White students (77.4% ELA proficient). The largest proficiency gap is 55.5 percentage points for english learner students. Data source: California Department of Education, CAASPP 2024-25. 671 students tested. SchoolScope shows disaggregated test scores by demographic subgroup so you can see how a school performs for your child's specific group — not just the school-wide average. Subgroup data is context, not part of the Scope Score: we don't penalize schools for who they serve. See our equity approach.
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Data source: California Department of Education (2025 test year) · How we score · Explore all schools · Blog