Skip to main content

Rancho Cucamonga Middle School

Home of the Lions

Homepage

A black and white image of a lion's head with the text 'Award for Excellence and Innovation' below.
Rock Climbing at science camp
Friends at the dance
RCMS Garden - Watermelon
Friends at Science Camp
RCMS Gym at night
RCMS B-wing at night
RCMS Library quad at night
Student-Staff 2025
Student-Staff 2025
Dance Team 2025
Student-Staff 2025
Student with admin.

Enroll­ment

School Locator

Calendar

Parent Portal

Bullying

A large crowd gathers in a gymnasium, filled with excitement and anticipation.

Welcome

About Our District

The Cucamonga School District is located in the western region of San Bernardino County in the Cities of Rancho Cucamonga and Ontario.  As one of four K-8 elementary school districts in the city, the students feed into the Chaffey Joint Union High School District.  The district has three elementary schools (K-5) and one middle school (6-8) serving a diverse student population of approximately 2443.
 

Learn More About Us

Our differentiators

District Goals

The Cucamonga School District, with an appreciation for diversity, provides a comprehensive education that promotes academic, emotional and social development, which enables students to be lifelong learners and realize their full potential as contributing members of society. 

Innovative Curriculum

Focus on, promote and challenge the success of all students to meet or exceed grade level standards through scientifically research-based quality curriculum, effective teaching strategies and professional development.

Collabor­ation & Support

Increase the effectiveness of parents, teachers and students working together as a team, through regular communication to ensure student achievement and success.

Optimizing Learning Experiences

Use all available resources to support optimum learning experiences for students by establishing priorities and controls which ensure spending in a responsible manner.

Latest News

Stay up to date on exciting news, events and more with the ParentSquare app!

This Week's Family Newsletter

October 5, 2026

This Week's Family Newsletter

RCMS Family Newsletter For the week of October 5th, 2026 RCMS Gets Running! Good Evening Families, This past week, RCMS students ran their first official mile. The PE team has been working with stu...

Superintendent's Weekly Newsletter

October 3, 2026

Superintendent's Weekly Newsletter

SUPERINTENDENT'S WEEKLY NEWSLETTEROctober 2, 2026 Dear CSD Parents and Guardians, Thank you to all of our families who took the time to connect with us during elementary school Parent-Teacher Confe...

Quick Friday Reminder: We Have School on Monday!

October 2, 2026

Quick Friday Reminder: We Have School on Monday!

Quick Friday Reminder Conferences Coming Up! Mark your calendars! Middle School conferences are 10/12-10/14 in the gym from 1pm-3pm. Teachers are available on 10/15 for phone and virtual conference...

Superintendent's Weekly Newsletter

September 26, 2026

Superintendent's Weekly Newsletter

SUPERINTENDENT'S WEEKLY NEWSLETTERSeptember 25, 2026 Dear CSD Families, As we move through September—National Attendance Awareness Month—I want to take a moment to celebrate the incredible effort o...

Upcoming Events

Accessibility View of Full-Page Calendar

View the full calendar to see all the exciting events we have happening in the next few weeks and months!

View Full Calendar

Portrait Of A Graduate

Launched in 2017, the Portrait of a Graduate (POG) focuses on developing well-rounded students ready to succeed in a changing world.

Learn More

District profile

At a Glance

Quick stats that highlight who we are by the numbers.

K-8

Grades within the district

2,357

Enrolled students

144

Full-time teachers

20:1

Student to teacher ratio