Total Students1,017
Student/Teacher21.88:1
Math Prof.19.4%
Reading Prof.39.67%
School Information
Charter SchoolNo
Magnet SchoolNo
Virtual SchoolNo
CountySan Bernardino
School DistrictRialto Unified School District
Principal / AdminCynthia Pool(909) 879-7308
Founded1980
Free/Reduced Lunch87.91% Eligible
Acceptance Rate100%
Student Demographics
White1.1%
Hispanic87.3%
Black8.8%
Asian1%
Native American0.1%
Pacific Islander0.2%
Two Or More1.5%
Gender Distribution
51.7%
48.3%
Male Female
Students per Grade
Grade 6326
Grade 7339
Grade 8352
School Calendar 2026-2027
July 2026
Academic Schedule • 2026-2027
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Rialto 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
Independence Day Observed HolidayJul 3
First Day for StudentsAug 5
Labor Day HolidaySep 7
Instructional BreakOct 12
Veterans' Day HolidayNov 11
Fall BreakNov 23
Thanksgiving HolidayNov 26
Winter Break BeginsDec 21
Christmas Eve HolidayDec 24
Christmas Day HolidayDec 25
In lieu of Admissions DayDec 31
New Year's Day HolidayJan 1
Winter Recess ContinuationJan 1
Dr. Martin Luther King's Day HolidayJan 18
Lincoln's Day HolidayFeb 8
Presidents' Day HolidayFeb 15
Spring BreakMar 17
Memorial Day HolidayMay 31
Last Day for StudentsJun 2
Juneteenth HolidayJun 18
Key Dates & Holidays
2026-2027Community Reviews
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