Twin Hills Charter Middle School

1685 Watertrough Rd.
Sebastopol, CA 95472
9/
10
Top 20%
Serving 207 students in grades 6-8, Twin Hills Charter Middle School ranks in the top 20% of all schools in California for overall test scores (math proficiency is top 20%, and reading proficiency is top 20%).
The percentage of students achieving proficiency in math is 55-59% (which is higher than the California state average of 34%). The percentage of students achieving proficiency in reading/language arts is 70% (which is higher than the California state average of 47%).
The student-teacher ratio of 17:1 is lower than the California state level of 21:1.
Minority enrollment is 42% of the student body (majority Hispanic), which is lower than the California state average of 80% (majority Hispanic).

Quick Facts (2026)

  • School Type: Charter School
  • Grades: 6-8
  • Enrollment: 207 students
  • Student-Teacher Ratio: 17:1
  • Minority Enrollment: 42%
  • : Top 20% in CA
  • : 55-59% (Top 20%)
  • : 70% (Top 20%)
  • : 40-44% (Top 30%)
  • Source: National Center for Education Statistics (NCES), CA Dept. of Education

Top Rankings

Twin Hills Charter Middle School ranks among the top 20% of public schools in California for:

School Overview

Twin Hills Charter Middle School's student population of 207 students has declined by 8% over five school years.
The teacher population of 12 teachers has declined by 20% over five school years.
School Type
Grades Offered
Grades 6-8
Total Students
207 students
Total Classroom Teachers
12 teachers
School Calendar

School Rankings

Twin Hills Charter Middle School ranks within the top 20% of all 9,523 schools in California (based off of combined math and reading proficiency testing data).
The diversity score of Twin Hills Charter Middle School is 0.58, which is less than the diversity score at state average of 0.63. The school's diversity has stayed relatively flat over five school years.
This School
State Level (CA)
#1238 out of 9523 schools
(Top 20%)
55-59%
34%
70%
47%
40-44%
29%
Student-Teacher Ratio
17:1
21:1
American Indian
n/a
1%
Asian
1%
12%
Hispanic
25%
56%
Black
1%
5%
White
58%
20%
Hawaiian
n/a
n/a
Two or more races
15%
6%
All Ethnic Groups
0.58
Eligible for Free Lunch
21%
54%
Eligible for Reduced Lunch (22-23)
2%
8%
School Statewide Testing
School District Name
Twin Hills Union Elementary School District
Source: National Center for Education Statistics (NCES), CA Dept. of Education

Frequently Asked Questions

What is Twin Hills Charter Middle School's ranking?
Twin Hills Charter Middle School is ranked #1238 out of 9,523 schools, which ranks it among the top 20% of public schools in California.
What schools are Twin Hills Charter Middle School often compared to?
Twin Hills Charter Middle Schoolis often viewed alongside schools like Hillcrest Middle School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
55-59% of students have achieved math proficiency (compared to the 34% CA state average), while 70% of students have achieved reading proficiency (compared to the 47% CA state average).
How many students attend Twin Hills Charter Middle School?
207 students attend Twin Hills Charter Middle School.
What is the racial composition of the student body?
58% of Twin Hills Charter Middle School students are White, 25% of students are Hispanic, 15% of students are Two or more races, 1% of students are Asian, and 1% of students are Black.
What is the student-teacher ratio of Twin Hills Charter Middle School?
Twin Hills Charter Middle School has a student ration of 17:1, which is lower than the California state average of 21:1.
What grades does Twin Hills Charter Middle School offer ?
Twin Hills Charter Middle School offers enrollment in grades 6-8
What school district is Twin Hills Charter Middle School part of?
Twin Hills Charter Middle School is part of Twin Hills Union Elementary School District.

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Quick Facts (2026)

  • School Type: Charter School
  • Grades: 6-8
  • Enrollment: 207 students
  • Student-Teacher Ratio: 17:1
  • Minority Enrollment: 42%
  • : Top 20%
  • : 55-59% (Top 20%)
  • : 70% (Top 20%)
  • : 40-44% (Top 30%)
  • Source: National Center for Education Statistics (NCES), CA Dept. of Education

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