PublicGrades K-5
Costano Elementary School
2086 Clarke Avenue, East Palo Alto, CA 94303-1207(650) 329-2830
Total Students369
Student/Teacher17.14:1
Math Prof.11.63%
Reading Prof.16.05%
School Information
Charter SchoolNo
Magnet SchoolNo
Virtual SchoolNo
CountySan Mateo
School DistrictRavenswood City Elementary School District
Principal / AdminRonda White(650) 329-2830
Founded1980
Free/Reduced Lunch89.97% Eligible
Acceptance Rate100%
Student Demographics
White2.4%
Hispanic72.9%
Black7.3%
Asian0.8%
Native American0.3%
Pacific Islander12.5%
Two Or More3.8%
Gender Distribution
46.9%
53.1%
Male Female
Students per Grade
Grade 162
Grade 252
Grade 365
Grade 452
Grade 561
School Calendar 2026-2027
July 2026
Academic Schedule • 2026-2027
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Costano Elementary 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)Jul 3
Labor DaySep 7
Veterans DayNov 11
Thanksgiving DayNov 26
Christmas DayDec 25
New Year's DayJan 1
Martin Luther King Jr. DayJan 18
Presidents' DayFeb 15
Memorial DayMay 31
Juneteenth (Observed)Jun 18
Key Dates & Holidays
2026-2027Community Reviews
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