Twin Hills Charter Middle: The score is strong. The trajectory is stronger.
Twin Hills Charter pairs 60% proficiency with gains that hold up when the same students are tracked two years apart — the rare school that posts both.
| Scope | % Exceeded | % Met+ | Growth | Absence | Suspension | |
|---|---|---|---|---|---|---|
| This school | 58 | 28% | 60% | +18.9 | 17.7% | 4.2% |
| CA average · Middle School | 43 | 17% | 39% | +1.5 | 18.5% | 3.7% |
Twin Hills Charter Middle scores 58 of 100 on SchoolScope's Scope Score — the 85th percentile of 2,238 California middle schools (CDE CAASPP 2025).
Measures test performance, attendance, and climate — not arts, community, or your kid. How we score →
🚀 Growth Engine — Ask how the school tracks each kid's growth year to year, and what happens when a kid stalls instead of gaining.
Most rating sites would stop at “60% proficient” and call it done. Twin Hills Charter deserves a closer read. It sits at the 85th percentile of 2,238 California middle schools — but the ranking is the least interesting thing on this page.
Twin Hills Charter's low-income kids hit 71.2% proficiency in ELA — a number the same group reaches at 38.2% statewide. If you're trying to read past zip-code-driven test scores, that's the signal worth weighing.
As a charter, Twin Hills Charter enrolls by application rather than address. That changes how you get in, but it doesn't change the score.
The seven-year arc
Has held the 85th-percentile line every tested year since 2019.
Proficiency here is back to its pre-pandemic level — 60% meet the standard, about where the school stood in 2019.
| Grade | 2019 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|
| Grade 6 | 68% | 62% | 68% | 69% | 58% |
| Grade 7 | 66% | 79% | 73% | 74% | 71% |
| Grade 8 | 75% | 68% | 79% | 63% | 70% |
| Grade | 2019 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|
| Grade 6 | 51% | 32% | 47% | 53% | 37% |
| Grade 7 | 43% | 66% | 49% | 52% | 62% |
| Grade 8 | 60% | 49% | 74% | 50% | 62% |
The story this school is actually telling
The school, grade by grade
ELA · CAASPP 2024–25Different students, same year — each bar is one grade's proficiency mix.
The honest read: the share exceeding rises 14.5pp across grades; the floor rises 12.2pp. The state average falls 0.5pp over the same span. Kids here gain ground the longer they stay — the pattern you want to see. A school visit and conversation with teachers will tell you more than this number.
Twin Hills Charter's most underrated number
71.2% of low-income students met the ELA standard — versus 38.2% for the same group statewide. That's the strongest kind of signal a school can post: it holds across income lines.
The 5 things our score weighs
Ask what changed — new curriculum, new principal, new program. Momentum has a cause, and a visit will find it.
- Ask whether extra support — tutoring, counseling, small groups — reaches kids across income lines, not just the students already ahead.
- Ask whether the tour can step into a working classroom — watch how the teacher handles a student who's stuck.
- Ask to tour while school's in session, and notice how hallways and transitions feel — culture shows up between classes, not just in them.
- Ask how the school communicates with families when a child starts to struggle.
- Ask what a typical day looks like for a new student in the first few weeks.
How every group of students does here
At Twin Hills Charter Middle in Sebastopol, 71.2% of low-income students met or exceeded the ELA standard in 2025, compared to 52.3% district-wide and 38.2% statewide. Twin Hills Charter Middle outperforms its district average for low-income students by 18.9 percentage points in ELA. Other subgroups: Low-Income students (53.8% Math proficient); White students (68.3% ELA proficient). The largest proficiency gap is 40.0 percentage points for disabilities students. Data source: California Department of Education, CAASPP 2024-25. 52 students tested.
5 of 13 student groups here are too small to report — a privacy protection, not a gap.
Change in proficiency from the lowest tested grade — which groups gain ground the longer they stay. Groups with fewer than 10 tested students per grade are not shown.
Low-income student ELA proficiency rises by 18.3pp from grade 6 to grade 8 at this school. District average: +19.3pp.
Showing up, and staying in class
Where the path goes
The path below follows attendance boundaries — scores shown for each next step.
Estimated path based on proximity within the same district. Contact your school district for official feeder information.
The people teaching here
Pay is set by the district, not the school.
What gets spent here
These measure different things: this figure is spending attributed to this campus, while district-wide figures also include central administration, districtwide programs, and the state's pension contributions made on the district's behalf — costs that never get assigned to a single school. The district number runs higher at nearly every school, not just this one.
$331 per student arrives as federal Title funding — a measure of concentrated need, not school quality.
The district's current expense of education per student, from CDE's annual SACS filing — the freshest district spending figure the state publishes.
District-level, from the district's own SACS general-ledger filing — school-by-school breakdowns aren't published by the state.
Source: NCES F-33 · Full district breakdown →
The neighborhood it serves
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2024) · ZIP-level
At 207 students, this school is much smaller than the typical California middle school (≈860).
On the state's science test (CAST), 49% met or exceeded the standard — science is tested in grades 5 and 8 but never enters the Scope Score.
Frequently asked questions
Is Twin Hills Charter Middle a good middle school?
What are Twin Hills Charter Middle's CAASPP test scores?
How does Twin Hills Charter Middle rank in California?
Is Twin Hills Charter Middle getting better or worse?
What is the attendance and school culture like at Twin Hills Charter Middle?
How does Twin Hills Charter Middle compare to other schools in Sebastopol?
How does Twin Hills Charter Middle serve low-income and underrepresented students?
Your other options
Nearby Middle Schools
2 within ~3 mi · avg 54
Nearby Elementary Schools
3 within ~3 mi · avg 50
Private alternatives nearby
Private schools within ~10 miles. These schools do not participate in state testing and cannot be scored or ranked.
Every number on this page
Score factors, grade-level breakdowns, subgroup proficiency, and peer comparisons.
| ELA | Tested | EXC | MET | NEAR | NOT | MET+ | +/CA |
|---|---|---|---|---|---|---|---|
| Grade 6 | 60 | 15% | 43% | 28% | 13% | 58% | +12 |
| Grade 7 | 82 | 29% | 41% | 18% | 11% | 71% | +23 |
| Grade 8 | 61 | 30% | 41% | 18% | 11% | 70% | +24 |
| Math | Tested | EXC | MET | NEAR | NOT | MET+ | +/CA |
|---|---|---|---|---|---|---|---|
| Grade 6 | 60 | 17% | 20% | 37% | 27% | 37% | +2 |
| Grade 7 | 82 | 33% | 29% | 26% | 12% | 62% | +28 |
| Grade 8 | 61 | 43% | 20% | 18% | 20% | 62% | +30 |
| Science (CAST) | Tested | EXC | MET | NEAR | NOT |
|---|---|---|---|---|---|
| Grade 5/8/11 | 61 | 13% | 36% | 44% | 7% |
CAST is tested in grades 5, 8, and once in high school — not annually. Not part of the Scope Score.
| Subgroup · ELA | Tested | MET+ | vs district | vs CA |
|---|---|---|---|---|
| Socioeconomically Disadvantaged | 52 | 71.2% | +19 | +33 |
| White | 120 | 68.3% | +6 | +7 |
| Hispanic/Latino | 49 | 55.1% | +6 | +16 |
| School | Dist | Scope | EXC | MET+ | Growth | Susp |
|---|---|---|---|---|---|---|
| Twin Hills Charter Middle ← | — | 58 | 27.7% | 60.1% | +18.9 | 4.2% |
| Hillcrest Middle | 1.8 mi | 62 | 36.2% | 67.7% | −5.4 | 9.5% |
| Brook Haven Middle | 1.5 mi | 46 | 16.0% | 45.9% | −4.7 | 6.3% |
| California average | — | 43 | 16.8% | 39.3% | +1.5 | 3.7% |
| Year | Scope | Pctile | Rank | Exc | Met+ | Absent | Susp | Growth |
|---|---|---|---|---|---|---|---|---|
| 2019 | 54 | 79 | #412 | 23.1% | 60.4% | 7.8% | 4.9% | +7.8pp |
| 2022 | 54 | 83 | #378 | 22.4% | 59.2% | 23.4% | 5.1% | +12.1pp |
| 2023 | 68 | 92 | #177 | 25.9% | 64.8% | 20.3% | 2.9% | +18.7pp |
| 2024 | 62 | 88 | #261 | 27.1% | 60.2% | 12.8% | 3.7% | -4.6pp |
| 2025 | 58 | 85 | #343 | 27.7% | 60.1% | 17.7% | 4.2% | +18.9pp |
| Group | 2019 | 2025 | Δ |
|---|---|---|---|
| Female | 6.2% | 16.2% | +10.0pp |
| Male | 9.4% | 18.9% | +9.5pp |
| Hispanic/Latino | 9.3% | 27.5% | +18.2pp |
| Two or More Races | 4.8% | 21.2% | +16.4pp |
| Students with Disabilities | 16.7% | 32.4% | +15.7pp |
| Socioeconomically Disadvantaged | 16.2% | 33.9% | +17.7pp |
| All Students | 7.7% | 17.6% | +9.9pp |
SchoolScope scores and verdicts are our interpretation of public California Department of Education data — independent analysis, not an official rating. How we analyze · Request a correction