Total Students2,623
Student/Teacher22.92:1
Math Prof.22.82%
Reading Prof.62.6%
Graduation Rate92.9%
School Information
Charter SchoolNo
Magnet SchoolNo
Virtual SchoolNo
CountySan Bernardino
School DistrictRialto Unified School District
Principal / AdminCaroline Sweeney(909) 421-7500
Founded1992
Free/Reduced Lunch85.67% Eligible
Acceptance Rate100%
Student Demographics
White1.2%
Hispanic91.3%
Black5.4%
Asian1.1%
Native American0.2%
Two Or More0.6%
Gender Distribution
52.2%
47.6%
Male Female
Students per Grade
Grade 9711
Grade 10611
Grade 11684
Grade 12617
School Calendar 2026-2027
July 2026
Academic Schedule • 2026-2027
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Rialto High 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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