Mary B. Lewis Elementary School serves 567 students in grades Kindergarten-6.
The percentage of students achieving proficiency in math is 21% (which is lower than the California state average of 40%) for the 2018-19 school year. The percentage of students achieving proficiency in reading/language arts is 35% (which is lower than the California state average of 51%) for the 2018-19 school year.
The student:teacher ratio of 24:1 is higher than 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 79% (majority Hispanic).
Quick Stats (2023-24)
- Grades: Kindergarten-6
- Enrollment: 567 students
- Student:Teacher Ratio: 24:1
- Minority Enrollment: 96%
- Math Proficiency: 21%
- Reading Proficiency: 35%
- Source: National Center for Education Statistics (NCES), CA Dept. of Education
School Overview
Mary B. Lewis Elementary School's student population of 567 students has declined by 21% over five school years.
The teacher population of 24 teachers has declined by 20% over five school years.
Grades Offered
Grades Kindergarten-6
Total Students
567 students

Gender %

Total Classroom Teachers
24 teachers

Students by Grade

School Rankings
The diversity score of Mary B. Lewis Elementary School is 0.19, 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.
Math Test Scores (% Proficient)
(18-19)21%
40%

Reading/Language Arts Test Scores (% Proficient)
(18-19)35%
51%

Student : Teacher Ratio
24:1
21:1

American Indian
n/a
1%

Asian
n/a
12%

Hispanic
90%
56%

Black
5%
5%

White
4%
21%

Hawaiian
n/a
n/a
Two or more races
1%
5%

All Ethnic Groups



Eligible for Free Lunch
66%
51%

Eligible for Reduced Lunch
2%
7%

School Statewide Testing
School District Name
Source: 2021-2022 (latest school year available) National Center for Education Statistics (NCES), CA Dept. of Education
Frequently Asked Questions
What percent of students have achieved state testing proficiency in math and reading?
21% of students have achieved math proficiency (compared to the 40% CA state average), while 35% of students have achieved reading proficiency (compared to the 51% CA state average).
How many students attend Mary B. Lewis Elementary School?
567 students attend Mary B. Lewis Elementary School.
What is the racial composition of the student body?
90% of Mary B. Lewis Elementary School students are Hispanic, 5% of students are Black, 4% of students are White, and 1% of students are Two or more races.
What is the student:teacher ratio of Mary B. Lewis Elementary School?
Mary B. Lewis Elementary School has a student ration of 24:1, which is higher than the California state average of 21:1.
What grades does Mary B. Lewis Elementary School offer ?
Mary B. Lewis Elementary School offers enrollment in grades Kindergarten-6
What school district is Mary B. Lewis Elementary School part of?
Mary B. Lewis Elementary School is part of Colton Joint Unified School District.
School Calendar
View the Mary B. Lewis Elementary School yearly calendar below.
School Reviews
Review Mary B. Lewis Elementary School. Reviews should be a few sentences in length. Please include any comments on:
- Quality of academic programs, teachers, and facilities
- Availability of music, art, sports and other extracurricular activities
Recent Articles

The Link between Music and a Child’s Math Abilities
Learn about the influence of music on a child’s cognitive mathematical abilities.
August 04, 2023
Preparing for a Successful 'Back to School'A one-stop guide for parents navigating the 'back to school' season, providing practical and effective strategies tailored to every grade level - from pre-K to high school.

July 25, 2023
The Evolving Role of Interim AssessmentsExplore the often-overlooked tool in K-12 education - interim assessments. Understand what they are, their importance, and how they can enhance your child's learning experience. Dive into real-world case studies and find out how technology is changing the game. This informative, parent-friendly article aims to shed light on the value of these assessments in today's educational landscape.