PublicGrades 5-8
Ruth Musser Middle School
10789 Terra Vista Parkway, Rancho Cucamonga, CA 91730-7324(909) 980-1230
Total Students941
Student/Teacher22.43:1
Math Prof.30.89%
Reading Prof.54.29%
School Information
Charter SchoolNo
Magnet SchoolNo
Virtual SchoolNo
CountySan Bernardino
School DistrictCentral Elementary School District
Principal / AdminSteven Pierce(909) 980-1230
Founded1992
Free/Reduced Lunch68.65% Eligible
Acceptance Rate100%
Student Demographics
White15%
Hispanic46.9%
Black16%
Asian13.5%
Native American0.2%
Pacific Islander0.6%
Two Or More7.8%
Gender Distribution
52.6%
47.4%
Male Female
Students per Grade
Grade 5144
Grade 6268
Grade 7253
Grade 8276
School Calendar 2026-2027
August 2026
Academic Schedule • 2026-2027
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Ruth Musser Middle School
Academic Calendar (2026-2027)
July 2026
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August 2026
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September 2026
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October 2026
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November 2026
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December 2026
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January 2027
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February 2027
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March 2027
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April 2027
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May 2027
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June 2027
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Key Dates & Holidays
Trimester 1 BeginsAug 6
First Day of School / All Grades Minimum DayAug 6
Labor Day HolidaySep 7
Elementary School Conferences Minimum DaysSep 14
Middle School Conferences Minimum DaysSep 15
Trimester 1 EndsOct 30
Trimester 2 BeginsNov 2
Veterans Day HolidayNov 11
Middle School Modified DayNov 20
Thanksgiving Holiday BreakNov 23
Middle School Modified DayDec 17
Winter Recess HolidayDec 21
Winter Recess HolidayJan 1
Martin Luther King Jr. Day HolidayJan 18
Middle School Conferences Minimum DaysJan 26
Lincoln's Birthday HolidayFeb 8
Presidents Day HolidayFeb 15
Trimester 2 EndsFeb 19
Trimester 3 BeginsFeb 22
Elementary School Conferences Minimum DaysMar 2
Middle School Modified DayMar 19
Spring Break Holiday RecessMar 22
Spring Break Holiday RecessApr 1
Middle School Modified DayMay 28
Last Day of School / All Grades Minimum DayMay 28
Trimester 3 EndsMay 28
Key Dates & Holidays
2026-2027Community Reviews
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