Rancho Dominguez Preparatory School is a public middle and high school in Long Beach, California in the Los Angeles metropolitan area, California, United States. It is a part of the Los Angeles Unified School District. It was previously named South Region High School #4.
Serving 707 students in grades 6-12, Rancho Dominguez Preparatory 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 20% (which is lower than the California state average of 34%). The percentage of students achieving proficiency in reading/language arts is 41% (which is lower than the California state average of 47%).
The student:teacher ratio of 18:1 is lower than the California state level of 21:1.
Minority enrollment is 98% of the student body (majority Hispanic), which is higher than the California state average of 80% (majority Hispanic).
Quick Stats (2025)
- Grades: 6-12
- Enrollment: 707 students
- Student:Teacher Ratio: 18:1
- Minority Enrollment: 98%
- Graduation Rate: 80-84% (Btm 50% in CA)
- Overall Testing Rank: Bottom 50%
- Math Proficiency: 20% (Btm 50%)
- Reading Proficiency: 41% (Btm 50%)
- Science Proficiency: 10-14% (Btm 50%)
- Source: National Center for Education Statistics (NCES), CA Dept. of Education
School Overview
Rancho Dominguez Preparatory's student population of 707 students has declined by 13% over five school years.
The teacher population of 39 teachers has stayed relatively flat over five school years.
Grades Offered
Grades 6-12
Total Students
707 students
Gender %
Total Classroom Teachers
39 teachers
Year Founded
2011
School Calendar
First Day of School
Mon. Sep 1, 2025
School Motto
Welcome to the Home of the Lobos!
School Rankings
Rancho Dominguez Preparatory 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 Rancho Dominguez Preparatory is 0.53, 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
#5796 out of 9523 schools
(Bottom 50%)
(Bottom 50%)
Math Test Scores (% Proficient)
20%
34%
Reading/Language Arts Test Scores (% Proficient)
41%
47%
Science Test Scores (% Proficient)
10-14%
29%
Student : Teacher Ratio
18:1
21:1
American Indian
n/a
1%
Asian
6%
12%
Hispanic
65%
56%
Black
22%
5%
White
2%
20%
Hawaiian
2%
n/a
Two or more races
3%
6%
All Ethnic Groups
Graduation Rate
80-84%
87%
Eligible for Free Lunch
84%
54%
Eligible for Reduced Lunch
7%
8%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), CA Dept. of Education
Profile last updated: 02/09/2025
Frequently Asked Questions
What is Rancho Dominguez Preparatory's ranking?
Rancho Dominguez Preparatory is ranked #5796 out of 9,523 schools, which ranks it among the bottom 50% of public schools in California.
What schools are Rancho Dominguez Preparatory often compared to?
Rancho Dominguez Preparatoryis often viewed alongside schools like Academies Of Education And Empowerment At Carson High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
20% of students have achieved math proficiency (compared to the 34% CA state average), while 41% of students have achieved reading proficiency (compared to the 47% CA state average).
What is the graduation rate of Rancho Dominguez Preparatory?
The graduation rate of Rancho Dominguez Preparatory is 80-84%, which is lower than the California state average of 87%.
How many students attend Rancho Dominguez Preparatory?
707 students attend Rancho Dominguez Preparatory.
What is the racial composition of the student body?
65% of Rancho Dominguez Preparatory students are Hispanic, 22% of students are Black, 6% of students are Asian, 3% of students are Two or more races, 2% of students are White, and 2% of students are Hawaiian.
What is the student:teacher ratio of Rancho Dominguez Preparatory?
Rancho Dominguez Preparatory has a student ration of 18:1, which is lower than the California state average of 21:1.
What grades does Rancho Dominguez Preparatory offer ?
Rancho Dominguez Preparatory offers enrollment in grades 6-12
What school district is Rancho Dominguez Preparatory part of?
Rancho Dominguez Preparatory is part of Los Angeles Unified School District.
School Reviews
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