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Very Good

#2017 of 9,539 schools in CA

Top 21% in state

Twin Hills Charter Middle

Middle School · Twin Hills Union Elementary

1685 Watertrough Rd., Sebastopol, CA 95472

Charter

Enrollment

207

Student-Teacher

15.9:1

Score

7.8

Grades

6th – 8th

Data vintage2022-23

How this school compares

California schools

#2,017 of 9,539

In Sebastopol

#6 of 13

public schools

In district

#2 of 4

Twin Hills Union Elementary

School environment

9.3 / 10

Excellent

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Twin Hills Charter Middle

7.8/10

Middle School in Sebastopol · grades 6th – 8th. Start here, then compare fit against nearby and district options.

Pleasant Hill Christian School

5.0/10

0.1 mi away. Use as a geographic alternative in the same move search.

Apple Blossom

5.2/10

1.1 mi away. Use as a geographic alternative in the same move search.

About Twin Hills Charter Middle

Twin Hills Charter Middle is a public middle school in Sebastopol, CA, part of Twin Hills Union Elementary. Twin Hills Charter Middle serves approximately 207 students, and covers grades 6th-8th, and has a 15.9:1 student-teacher ratio. Twin Hills Charter Middle has a current MySchoolScout rating of 7.8 out of 10 and ranks #2,017 of 9,539 schools in CA.

Structured state assessment records for Twin Hills Charter Middle show 55% math proficiency (multi-year average, 2009-2024) and 69% reading/ELA proficiency (multi-year average, 2009-2024).

How it compares1.3 pts above CA schools
  • This school 7.8 · Very Good
  • CA avg 6.5

What Parents Should Know

Twin Hills Charter Middle is a charter school: publicly funded, but run with more independence than a traditional district school. Many charters are built around a specific model or focus, so it's worth understanding this one's mission, how enrollment works, and how it differs from the district schools nearby.

Score Breakdown

Full Profile · 3/3 metrics
Student Progress6.8Average40%
Year-over-year improvement in student test scores.
View breakdown
Years of Data12
Annual Change-1.2 pts/yr
Data Period2009–2024
TrendDeclining
Academics8.0Excellent35%
Student proficiency on state tests, adjusted for community poverty levels.
View breakdown
Math Proficiency51.7% (2024 CAASPP)
Reading/ELA Proficiency68.5% (2024 CAASPP)
Math vs. State Avg+17.3 pts
Reading vs. State Avg+22.6 pts
Overall Proficiency60% (2024 CAASPP, Math+ELA)
Expected (poverty-adj.)60% (model expectation from 2024 CAASPP)
vs. Expected+0.4 pts
Adjusted Percentile70th
Resources & Environment9.3Excellent25%
Student-teacher ratio, per-pupil spending, and attendance.
View breakdown
Student-Teacher Ratio15.9:1
Per-Pupil Spending$15,776
Chronic Absenteeism20.3%

Twin Hills Charter Middle — Students at Twin Hills Charter Middle score 60% proficient, which is above what's typical for similar communities (expected: 60%).

How we calculate scores →

Equity & Diversity

Shown separately, not included in overall score

Free/Reduced Lunch

26.1%

Students qualifying for federal meal assistance

Test Scores CA CAASPP (2023-24)

Math Proficiency 55.4% (multi-year average, 2009-2024)
School
State
33.9% (2024 CAASPP)
ELA Proficiency 69.2% (multi-year average, 2009-2024)
School
State
46.6% (2024 CAASPP)

Based on 30 test records from CA state assessments. About our data

Proficiency Trend

→ Stable

Average proficiency (% at or above grade level) across Math & ELA over time.

2009
Math
71%
ELA
77%
2010
Math
71%
ELA
79%
2011
Math
72%
ELA
81%
2012
Math
72%
ELA
79%
2014
Math
45%
ELA
58%
2015
Math
40%
ELA
52%
2016
Math
52%
ELA
66%
2017
Math
50%
ELA
63%
2018
Math
51%
ELA
70%
2019
Math
51%
ELA
70%
2022
Math
49.7%
ELA
69.1%
2024
Math
51.7%
ELA
68.6%

Source: EdFacts (NCES) and state assessment data. Growth score: 6.8/10.

How Twin Hills Charter Middle Compares

See how Twin Hills Charter Middle performs across key quality dimensions compared to state benchmarks.

Overall Score
7.8/10
79th percentile in CA
Academic
8.0/10
Excellent
Growth
6.8/10
Average
Environment
9.3/10
Excellent

Funding & Resources

Free/Reduced Lunch
Students eligible for subsidized meals
26%
Teaching Staff
16:1 student-teacher ratio
13 teachers
Chronic Absenteeism
Students missing 15+ days per year (SY 2022-23)
20.3%

Location

1685 Watertrough Rd., Sebastopol, CA 95472

Nearby Alternatives

Families considering Twin Hills Charter Middle may also want to explore other middle schools in the area. Brook Haven Middle (rated 8.3/10, 1.5 miles away), which scores slightly higher. Additionally, Hillcrest Middle (rated 7.7/10, 1.8 miles away), with a very similar rating. For more schools in Sebastopol, see our Sebastopol schools guide .

Nearby Schools

20 within 4.4 mi
School Distance Rating
PLEASANT HILL CHRISTIAN SCHOOL Sebastopol 0.1 mi 5.0
Apple Blossom Sebastopol 1.1 mi 5.2
Orchard View Sebastopol 1.1 mi 7.9
Sunridge Charter Sebastopol 1.2 mi 7.0
Park Side Elementary Sebastopol 1.5 mi 8.8
Brook Haven Middle Sebastopol 1.5 mi 8.3
Analy High Sebastopol 2.0 mi 6.5
Hillcrest Middle Sebastopol 1.8 mi 7.7
Sebastopol Independent Charter Sebastopol 2.4 mi 8.2
GREENACRE HOMES Sebastopol 3.2 mi 6.5
Greenacre Homes & School - Atkinson Sebastopol 3.2 mi
Gravenstein Elementary Sebastopol 3.1 mi 8.9
Gravenstein First Sebastopol 3.1 mi 6.9
Plumfield Academy Sebastopol 3.5 mi
PLUMFIELD ACADEMY Sebastopol 3.5 mi
Oak Grove Elementary Sebastopol 4.0 mi 7.4
Oak Grove Elementary/Willowside Middle Santa Rosa 4.4 mi 6.7
SUMMERFIELD WALDORF SCHOOL AND FARM Santa Rosa 4.6 mi 6.6
Summerfield Waldorf School and Farm Santa Rosa 4.6 mi
Wright Charter Santa Rosa 4.4 mi 5.1

Neighborhood Census ACS (2019-2023)

Census data for ZIP 95472 (ACS 2019-2023 5-Year Estimates) · Data sources

Median Income

$109,775

Median Home Value

$995,200

Median Rent

$1,918/mo

Population

28,588

College Educated

50.2%

Homeownership

72%

Avg Commute

27.1 min

Poverty Rate

9.2%

Median Age

50.9

Similar Schools

Schools in the same state with comparable level, size, and ratings

School Rating
Durham Intermediate Durham, CA 7.8
Ingenium Charter Middle Winnetka, CA 7.8
Lemoore University Elementary Charter Lemoore, CA 7.8
Walnut Grove Intermediate West Covina, CA 7.8
Bellevue Senior Elementary Atwater, CA 7.7
Hillcrest Middle Sebastopol, CA 7.7

Frequently Asked Questions

Common questions about Twin Hills Charter Middle

What grades does Twin Hills Charter Middle serve?

Twin Hills Charter Middle serves students in grades 6th through 8th.

How many students attend Twin Hills Charter Middle?

Twin Hills Charter Middle has an enrollment of approximately 207 students.

What is the student-teacher ratio at Twin Hills Charter Middle?

The student-teacher ratio at Twin Hills Charter Middle is 15.9:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.

How does Twin Hills Charter Middle rank in CA?

Twin Hills Charter Middle ranks #2,017 of 9,539 schools in CA.

What is Twin Hills Charter Middle's MySchoolScout rating?

Twin Hills Charter Middle has a current MySchoolScout rating of 7.8 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.

What are the test scores at Twin Hills Charter Middle?

Based on loaded state assessment records, Twin Hills Charter Middle has 55% math proficiency (multi-year average, 2009-2024) and 69% reading/ELA proficiency (multi-year average, 2009-2024).

Is Twin Hills Charter Middle a charter school?

Yes, Twin Hills Charter Middle is a charter school. Charter schools are publicly funded but independently operated, often with more flexibility in curriculum and teaching methods.

Is Twin Hills Charter Middle a Title I school?

No, Twin Hills Charter Middle is not currently a Title I school.

What does the Free & Reduced Lunch percentage mean for Twin Hills Charter Middle?

26.1% of students at Twin Hills Charter Middle qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.

11 schools nearby View map →

Neighborhood Context

Walk Score
19 Car-Dependent
Bike Score
7 Somewhat Bikeable

Powered by Walk Score

Quick Facts NCES CCD (SY 2022-23)

Grades
6th – 8th
Enrollment
207
Student-Teacher Ratio
15.9:1
Teachers (FTE)
13
Free/Reduced Lunch
26.1%
Type
regular
Setting
Fringe Town
County
Sonoma County
Chronic Absenteeism (SY 2022-23)
20.3%

District

Twin Hills Union Elementary
District Enrollment
957
Schools in District
4
Per-Pupil Spending
$15,776
District Rank
#2 of 4

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