Alta Loma High School is a public high school located in Rancho Cucamonga, California, United States, and is part of the Chaffey Joint Union High School District.
Serving 2,386 students in grades 9-12, Alta Loma High School ranks in the top 20% of all schools in California for overall test scores (math proficiency is top 50%, and reading proficiency is top 50%).
The percentage of students achieving proficiency in math is 42% (which is higher than the California state average of 34%). The percentage of students achieving proficiency in reading/language arts is 75% (which is higher than the California state average of 47%).
The student-teacher ratio of 25:1 is higher than the California state level of 21:1.
Minority enrollment is 77% of the student body (majority Hispanic), which is lower than the California state average of 80% (majority Hispanic).
Quick Facts (2026-27)
- Grades: 9-12
- Enrollment: 2,386 students
- Student-Teacher Ratio: 25:1
- Minority Enrollment: 77%
- Graduation Rate: 94% (Top 30% in CA)
- Overall Testing Rank: Top 20%
- Math Proficiency: 42% (Top 50%)
- Reading Proficiency: 75% (Top 10%)
- Science Proficiency: 26% (Top 50%)
- Attendance Zone: Alta Loma High serves the northern part of Rancho Cucamonga, CA, covering an attendance area of approximately 40.6 square miles. The typical drive to the school takes about 10 to 12 minutes, with the furthest edge of the zone located 12.4 miles away.
- Source: National Center for Education Statistics (NCES), CA Dept. of Education
Top Rankings
Alta Loma High School ranks among the top 20% of public schools in California for:
Category
Attribute
Overall Rank
Most improved public schools
Reading/Language Arts Proficiency
School Overview
Alta Loma High School's student population of 2,386 students has stayed relatively flat over five school years.
The teacher population of 96 teachers has stayed relatively flat over five school years.
Grades Offered
Grades 9-12
Total Students
2,386 students
Total Classroom Teachers
96 teachers
Year Founded
1963
School Calendar
School Motto
To provide student learning, and ultimately their achievement
School Rankings
Alta Loma High 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 Alta Loma High 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.
Overall Testing Rank
#1747 out of 9523 schools
(Top 20%)
(Top 20%)
Math Test Scores (% Proficient)
42%
34%
Reading/Language Arts Test Scores (% Proficient)
75%
47%
Science Test Scores (% Proficient)
26%
29%
Student-Teacher Ratio
25:1
21:1
American Indian
1%
1%
Asian
5%
12%
Hispanic
60%
56%
Black
6%
5%
White
23%
20%
Hawaiian
n/a
n/a
Two or more races
5%
6%
All Ethnic Groups
Graduation Rate
94%
87%
Chronically Absent Students
(22-23)25.8%
27.7%
Eligible for Free Lunch
45%
54%
Eligible for Reduced Lunch
16%
8%
School Statewide Testing
School District Name
Sports
Colors
White, Royal blue, Silver
School Mascot
Brave
Source: National Center for Education Statistics (NCES), CA Dept. of Education
Frequently Asked Questions
What is Alta Loma High School's ranking?
Alta Loma High School is ranked #1747 out of 9,523 schools, which ranks it among the top 20% of public schools in California.
What schools are Alta Loma High School often compared to?
Alta Loma High Schoolis often viewed alongside schools like Los Osos High School, Rancho Cucamonga High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
42% of students have achieved math proficiency (compared to the 34% CA state average), while 75% of students have achieved reading proficiency (compared to the 47% CA state average).
What is the graduation rate of Alta Loma High School?
The graduation rate of Alta Loma High School is 94%, which is higher than the California state average of 87%.
How many students attend Alta Loma High School?
2,386 students attend Alta Loma High School.
What is the racial composition of the student body?
60% of Alta Loma High School students are Hispanic, 23% of students are White, 6% of students are Black, 5% of students are Asian, 5% of students are Two or more races, and 1% of students are American Indian.
What is the student-teacher ratio of Alta Loma High School?
Alta Loma High School has a student ration of 25:1, which is higher than the California state average of 21:1.
What grades does Alta Loma High School offer ?
Alta Loma High School offers enrollment in grades 9-12
What school district is Alta Loma High School part of?
Alta Loma High School is part of Chaffey Joint Union High School District.
School Reviews
5 10/10/2025
This is the best school with an excellent staff and enviorment. It has great academics, sports teams, and students. Anyone who says otherwise is completely clueless. There is tons of school spirt and I love this place more than anything in the world. GO BRAVES!!!
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