San Lorenzo High School, also known as "SLz", is a public high school located in San Lorenzo, California, and is part of the San Lorenzo Unified School District. The school's student body reflects the diversity of its surrounding and nearby communities, namely San Lorenzo, San Leandro, Hayward, and Oakland.
Serving 1,029 students in grades 9-12, San Lorenzo High School ranks in the bottom 50% of all schools in California for overall test scores (math proficiency is bottom 50%, and reading proficiency is bottom 50%).
The percentage of students achieving proficiency in math is 12% (which is lower than the California state average of 34%). The percentage of students achieving proficiency in reading/language arts is 34% (which is lower than the California state average of 47%).
The student-teacher ratio of 21:1 is equal to the California state level of 21:1.
Minority enrollment is 96% of the student body (majority Hispanic), which is higher than the California state average of 80% (majority Hispanic).
Quick Facts (2026)
- Grades: 9-12
- Enrollment: 1,029 students
- Student-Teacher Ratio: 21:1
- Minority Enrollment: 96%
- Graduation Rate: 85% (Btm 50% in CA)
- Overall Testing Rank: Bottom 50%
- Math Proficiency: 12% (Btm 50%)
- Reading Proficiency: 34% (Btm 50%)
- Science Proficiency: 14% (Btm 50%)
- Source: National Center for Education Statistics (NCES), CA Dept. of Education
School Overview
San Lorenzo High School's student population of 1,029 students has declined by 22% over five school years.
The teacher population of 50 teachers has declined by 24% over five school years.
Grades Offered
Grades 9-12
Total Students
1,029 students
Total Classroom Teachers
50 teachers
Year Founded
1950
Colors
White, Maroon, Gold
School Rankings
San Lorenzo High School ranks within the bottom 50% of all 9,523 schools in California (based off of combined math and reading proficiency testing data).
The diversity score of San Lorenzo High School is 0.50, 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.
Overall Testing Rank
#7399 out of 9523 schools
(Bottom 50%)
(Bottom 50%)
Math Test Scores (% Proficient)
12%
34%
Reading/Language Arts Test Scores (% Proficient)
34%
47%
Science Test Scores (% Proficient)
14%
29%
Student-Teacher Ratio
21:1
21:1
American Indian
n/a
1%
Asian
13%
12%
Hispanic
69%
56%
Black
10%
5%
White
4%
20%
Hawaiian
2%
n/a
Two or more races
2%
6%
All Ethnic Groups
Graduation Rate
85%
87%
Eligible for Free Lunch
69%
54%
Eligible for Reduced Lunch
12%
8%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), CA Dept. of Education
School Notes
- School Mascot: Grizzlies
Frequently Asked Questions
What is San Lorenzo High School's ranking?
San Lorenzo High School is ranked #7399 out of 9,523 schools, which ranks it among the bottom 50% of public schools in California.
What schools are San Lorenzo High School often compared to?
San Lorenzo High Schoolis often viewed alongside schools like Arroyo High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
12% of students have achieved math proficiency (compared to the 34% CA state average), while 34% of students have achieved reading proficiency (compared to the 47% CA state average).
What is the graduation rate of San Lorenzo High School?
The graduation rate of San Lorenzo High School is 85%, which is lower than the California state average of 87%.
How many students attend San Lorenzo High School?
1,029 students attend San Lorenzo High School.
What is the racial composition of the student body?
69% of San Lorenzo High School students are Hispanic, 13% of students are Asian, 10% of students are Black, 4% of students are White, 2% of students are Hawaiian, and 2% of students are Two or more races.
What is the student-teacher ratio of San Lorenzo High School?
San Lorenzo High School has a student ration of 21:1, which is equal to the California state average of 21:1.
What grades does San Lorenzo High School offer ?
San Lorenzo High School offers enrollment in grades 9-12
What school district is San Lorenzo High School part of?
San Lorenzo High School is part of San Lorenzo Unified School District.
School Calendar
View the San Lorenzo High School yearly calendar below.
School Reviews
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