Serving 849 students in grades 6-8, Castillero Middle School ranks in the top 30% of all schools in California for overall test scores (math proficiency is top 30%, and reading proficiency is top 30%).
The percentage of students achieving proficiency in math is 46% (which is higher than the California state average of 34%). The percentage of students achieving proficiency in reading/language arts is 58% (which is higher than the California state average of 47%).
The student-teacher ratio of 22:1 is higher than the California state level of 21:1.
Minority enrollment is 66% of the student body (majority Hispanic), which is lower than the California state average of 80% (majority Hispanic).
Quick Facts (2026)
- Grades: 6-8
- Enrollment: 849 students
- Student-Teacher Ratio: 22:1
- Minority Enrollment: 66%
- Overall Testing Rank: Top 30% in CA
- Math Proficiency: 46% (Top 30%)
- Reading Proficiency: 58% (Top 30%)
- Science Proficiency: 38% (Top 30%)
- Source: National Center for Education Statistics (NCES), CA Dept. of Education
School Overview
Castillero Middle School's student population of 849 students has declined by 19% over five school years.
The teacher population of 39 teachers has declined by 17% over five school years.
Grades Offered
Grades 6-8
Total Students
849 students
Gender %
Total Classroom Teachers
39 teachers
Year Founded
1978
School Calendar
School Rankings
Castillero Middle School ranks within the top 30% of all 9,523 schools in California (based off of combined math and reading proficiency testing data).
The diversity score of Castillero Middle School is 0.69, which is more than the diversity score at state average of 0.63. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#2335 out of 9523 schools
(Top 30%)
(Top 30%)
Math Test Scores (% Proficient)
46%
34%
Reading/Language Arts Test Scores (% Proficient)
58%
47%
Science Test Scores (% Proficient)
38%
29%
Student-Teacher Ratio
22:1
21:1
American Indian
n/a
1%
Asian
16%
12%
Hispanic
41%
56%
Black
1%
5%
White
34%
20%
Hawaiian
n/a
n/a
Two or more races
8%
6%
All Ethnic Groups
Eligible for Free Lunch
26%
54%
Eligible for Reduced Lunch
4%
8%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), CA Dept. of Education
School Notes
- School Mascot: Cobra
Frequently Asked Questions
What is Castillero Middle School's ranking?
Castillero Middle School is ranked #2335 out of 9,523 schools, which ranks it among the top 30% of public schools in California.
What schools are Castillero Middle School often compared to?
Castillero Middle Schoolis often viewed alongside schools like Bret Harte Middle School, John Muir Middle School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
46% of students have achieved math proficiency (compared to the 34% CA state average), while 58% of students have achieved reading proficiency (compared to the 47% CA state average).
How many students attend Castillero Middle School?
849 students attend Castillero Middle School.
What is the racial composition of the student body?
41% of Castillero Middle School students are Hispanic, 34% of students are White, 16% of students are Asian, 8% of students are Two or more races, and 1% of students are Black.
What is the student-teacher ratio of Castillero Middle School?
Castillero Middle School has a student ration of 22:1, which is higher than the California state average of 21:1.
What grades does Castillero Middle School offer ?
Castillero Middle School offers enrollment in grades 6-8
What school district is Castillero Middle School part of?
Castillero Middle School is part of San Jose Unified School District.
In what neighborhood is Castillero Middle School located?
Castillero Middle School is located in the Almaden neighborhood of San Jose, CA. There are 7 other public schools located in Almaden.
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