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Chapter

River Islands High

Lathrop, CA

CharterHigh · Grades 9–12
riacademies.net/riverislandshighschool_home.aspx2760 Penrose Ln., Lathrop, CA 95330(209) 717-6715
Test scores
California state tests, 2024–25

English language arts

131 students tested

52.7% met or exceeded the standard.

  • Exceeded18.3%
  • Met34.4%
  • Nearly met29.0%
  • Not met18.3%

Math

132 students tested

31.8% met or exceeded the standard.

  • Exceeded12.9%
  • Met18.9%
  • Nearly met25.0%
  • Not met43.2%
Discipline
State and federal reports

California Department of Education

6.8% of students were suspended at least once in 2024–25.

Measure2023–242024–25
Enrolled during the year291548
Suspended in or out of school8.2% · 246.8% · 37
Suspensions2847
Violence with injury24
Violence without injury1927
Weapons01
Drugs711
Defiance only00
Other04

Each suspension is listed under its most serious offense.

U.S. Department of Education

Measure2023–24
Enrolled in the fall276
Suspended out of school8.7% · 24
Suspended in school0.0% · 0
Expelled0.0% · 0
Attendance
California Department of Education

14.3% of students were chronically absent in 2024–25.

Measure2023–242024–25
Students counted287544
Chronically absent11.1% · 3214.3% · 78

Chronically absent means missing 10% or more of the school days a student was enrolled.

School Profile

Location

Rural, Fringe

Enrollment

278 students

Student-Teacher Ratio

18:1

Demographics
Hispanic/Latino32.7%
x
White10.8%
x
Black or African American7.6%
x
Asian39.2%
x
Two or More Races6.8%
x
American Indian or Alaska Native1.1%
x
Native Hawaiian or Pacific Islander1.8%
x
Public school directory

NCES ID 060257414622

District
River Islands High District
Status
Open
School category
Regular School
Charter
Yes
Virtual instruction
No virtual instruction
Enrollment
278 students
Teachers (FTE)
15.7

Sources