Twin Hills Charter Middle School
Middle school in Sebastopol, CA · Twin Hills Union Elementary · Grades 6-8 · Charter
On the spring 2026 state tests, 58% of Twin Hills Charter Middle School students met or exceeded California's reading (ELA) standard and 55% met the math standard. In reading, that is 9 points above the California average (49%). Its reading result is higher than 55% of Bay Area middle schools, and it ranks 2nd of 3 public middle schools in Sebastopol. Reading results in 2026 were 11 points lower than in 2024, and math results were 3 points higher than in 2024.
Test scores, 2024 to 2026
| Subject | Spring 2024 | Spring 2025 | Spring 2026 | Change |
|---|---|---|---|---|
| Reading (ELA) | 68% | 67% | 58% | −11 pts |
| Math | 52% | 55% | 55% | +3 pts |
Compared with nearby averages
| Spring 2026 | Reading (ELA) | Math |
|---|---|---|
| Twin Hills Charter Middle School | 58% | 55% |
| Sonoma County | 45% | 33% |
| California | 49% | 38% |
Results by grade, spring 2026
| Grade | Reading (ELA) | Math |
|---|---|---|
| 6th grade | 60% | 40% |
| 7th grade | 57% | 54% |
| 8th grade | 56% | 70% |
Students are tested in grades 3 to 8 and 11. Each grade is a different group of students, so differences between grades are not a trend.
Homes near Twin Hills Charter Middle School
The typical home value in ZIP code 95472, where Twin Hills Charter Middle School is located, is $1.09M, up 2.5% over the past year (Zillow Home Value Index). Prices inside the school's attendance zone can differ.
Charter schools usually admit by application or lottery, so where you live may not decide whether your child can attend.
Nearby middle schools
| Distance | School | Reading (ELA) | Math | Typical home value (ZIP) |
|---|---|---|---|---|
| 1.5 mi | Brook Haven MiddleSebastopol · Grades 5-8 | 55% | 32% | $1.09M |
| 1.8 mi | Hillcrest Middle CharterSebastopol · Grades 6-8 | 67% | 58% | $1.09M |
| 6.8 mi | Piner Junior HighSanta Rosa · Grades 7-8 | 21% | 9% | $724K |
| 7.9 mi | Technology MiddleRohnert Park · Grades 6-8 | 32% | 13% | $706K |
| 8.0 mi | Piner-Olivet Charter CharterSanta Rosa · Grades 7-8 | 35% | 29% | $724K |
| 8.2 mi | Santa Rosa Junior HighSanta Rosa · Grades 7-8 | 30% | 19% | $645K |
School details
- Address
- 1685 Watertrough Road, Sebastopol, CA 95472
Get directions · See it on our map - Phone
- (707) 823-7446
- District
- Twin Hills Union Elementary
- County
- Sonoma County
- Grades
- 6-8
- Students
- 252 (2025-26)
- Type
- Middle school · Traditional · Charter
- State school code
- 49709616052302
Common questions
How did Twin Hills Charter Middle School do on state tests?
In spring 2026, 58% of students met or exceeded the reading (ELA) standard and 55% met the math standard, compared with 49% and 38% across California.
How many students attend Twin Hills Charter Middle School?
252 students were enrolled in the 2025-26 school year, in grades 6-8.
How much do homes cost near Twin Hills Charter Middle School?
The typical home value in ZIP code 95472, where Twin Hills Charter Middle School is located, is $1.09M, up 2.5% over the past year (Zillow Home Value Index). Prices inside the school's attendance zone can differ.
Does living near Twin Hills Charter Middle School guarantee a spot?
No. As a charter school it usually admits by application or lottery rather than by address.