Total Students1,638
Student/Teacher21.1:1
Math Prof.40.16%
Reading Prof.61.2%
School Information
Charter SchoolNo
Magnet SchoolNo
Virtual SchoolNo
CountyLos Angeles
School DistrictEl Monte Union High School District
Principal / AdminGabriel Flores(626) 444-9201
Founded1980
Free/Reduced Lunch84.13% Eligible
Acceptance Rate100%
Student Demographics
White1.7%
Hispanic72.3%
Black0.3%
Asian24.8%
Pacific Islander0.1%
Two Or More0.5%
Gender Distribution
52.8%
47.1%
Male Female
Students per Grade
Grade 9420
Grade 10393
Grade 11402
Grade 12423
School Calendar 2026-2027
July 2026
Academic Schedule • 2026-2027
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Arroyo 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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Key Dates & Holidays
Independence Day HolidayJul 3
First Day for StudentsAug 19
Labor Day ObservanceSep 7
First Grading Period EndSep 25
Second Grading Period EndOct 30
Veterans Day ObservanceNov 11
Student and Teacher Free DayNov 23
Thanksgiving Day ObservanceNov 26
Thanksgiving Day Local HolidayNov 27
Student Minimum Day for Final ExamsDec 17
First Semester Ends and Minimum DayDec 18
Winter RecessDec 21
Christmas Eve Local HolidayDec 24
Christmas Day ObservanceDec 25
New Year's Day ObservanceJan 1
Second Semester BeginsJan 4
Martin Luther King Jr. Birthday ObservanceJan 18
Lincoln Day ObservanceFeb 8
Presidents' Day ObservanceFeb 15
First Grading Period End of Second SemesterFeb 19
Spring Break CommencementMar 29
Spring Break ContinuationApr 1
Classified Holiday During Spring BreakApr 2
Second Grading Period End of Second SemesterApr 16
Student and Teacher Free DayApr 30
Memorial Day ObservanceMay 31
Student Minimum Day for Final ExamsJun 2
Last Day of School and Second Semester EndJun 3
Juneteenth ObservanceJun 18
Key Dates & Holidays
2026-2027A Hub for Student Growth and Achievement
This institution, part of the El Monte Union High School District, fosters a dynamic learning environment for grades 9-12. Families often look for schools offering sports like basketball and soccer, or enriching programs like STEM and robotics. Students may also have opportunities to explore visual arts and participate in track.
Connecting with the Arroyo Community
Engage with our vibrant school community. Parents can find important dates and deadlines by checking the academic calendar directly on this page. We encourage active participation from all families.
Frequently Asked Questions
What extracurricular activities are available for students?
While specific programs vary each year, students often have access to clubs like robotics and athletics such as soccer. We recommend contacting the administration directly for the current list of activities.
How can I stay informed about school events and updates?
The best way to stay informed is by regularly checking this page for announcements and the academic calendar. You can also follow our official social media channels, if available.
Does the school offer advanced placement (AP) courses?
The campus provides a range of academic challenges. For a detailed list of current AP offerings and other advanced coursework, please refer to the curriculum section or contact the guidance department.
What is the school's approach to college and career readiness?
Our school is committed to preparing students for their futures. We offer guidance counseling and programs designed to explore post-secondary options, including college applications and vocational training.
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