Total Students544
Student/Teacher22.24:1
Math Prof.23.03%
Reading Prof.30.08%
School Information
Charter SchoolNo
Magnet SchoolNo
Virtual SchoolNo
CountyLos Angeles
School DistrictEl Rancho Unified School District
Principal / AdminLorin Yannarella(562) 801-7580
Founded1980
Free/Reduced Lunch86.95% Eligible
Acceptance Rate100%
Student Demographics
White1.1%
Hispanic98%
Black0.2%
Asian0.6%
Two Or More0.2%
Gender Distribution
48.7%
51.3%
Male Female
Students per Grade
Grade 6190
Grade 7173
Grade 8181
School Calendar 2026-2027
July 2026
Academic Schedule • 2026-2027
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Rivera 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 of SchoolAug 12
Labor Day HolidaySep 7
First Quarter Ends (Salazar Continuation)Oct 9
First Trimester Ends (Elementary)Nov 6
Veterans Day HolidayNov 11
Thanksgiving RecessNov 23
Thanksgiving Day HolidayNov 26
Thanksgiving HolidayNov 27
First Semester EndsDec 18
Winter Recess BeginsDec 21
Christmas Eve HolidayDec 24
Christmas Day HolidayDec 25
Post Christmas Day HolidayDec 28
New Year's Eve HolidayDec 31
New Year's Day HolidayJan 1
Winter Recess ContinuedJan 4
Second Semester BeginsJan 11
Martin Luther King, Jr. Day HolidayJan 18
Lincoln's Day Observed HolidayFeb 8
Presidents' Day HolidayFeb 15
Second Trimester Ends (Elementary)Mar 5
Third Quarter Ends (Salazar Continuation)Mar 26
Spring Recess BeginsMar 29
Spring Recess ContinuedApr 1
Cesar Chavez Day ObservedApr 2
Fourth Quarter Begins (Salazar Continuation)Apr 5
Memorial Day HolidayMay 31
Last Day of ClassJun 3
Juneteenth HolidayJun 18
Key Dates & Holidays
2026-2027Community Reviews
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