Serving 348 students in grades Kindergarten-5, Costano Elementary School ranks in the bottom 50% of all schools in California for overall test scores (math proficiency is bottom 50%, and reading proficiency is bottom 50%).
The percentage of students achieving proficiency in math is 3% (which is lower than the California state average of 33%). The percentage of students achieving proficiency in reading/language arts is 15% (which is lower than the California state average of 47%).
The student:teacher ratio of 18:1 is lower than the California state level of 22:1.
Minority enrollment is 97% of the student body (majority Hispanic), which is higher than the California state average of 79% (majority Hispanic).
Quick Stats (2024-25)
- School Type: Magnet School
- Grades: Kindergarten-5
- Enrollment: 348 students
- Student:Teacher Ratio: 18:1
- Minority Enrollment: 97%
- Overall Testing Rank: Bottom 50% in CA
- Math Proficiency: 3% (Btm 50%)
- Reading Proficiency: 15% (Btm 50%)
- Science Proficiency: ≤5% (Btm 50%)
- Source: National Center for Education Statistics (NCES), CA Dept. of Education
Top Rankings
Costano Elementary School ranks among the top 20% of public schools in California for:
Category
Attribute
Percent Eligible For Free Lunch
Student Attention
School Overview
Costano Elementary School's student population of 348 students has stayed relatively flat over five school years.
The teacher population of 19 teachers has grown by 18% over five school years.
School Type
Grades Offered
Grades Kindergarten-5
Total Students
348 students
Gender %
Total Classroom Teachers
19 teachers
Students by Grade
School Calendar
School Rankings
Costano Elementary School ranks within the bottom 50% of all 9,602 schools in California (based off of combined math and reading proficiency testing data).
The diversity score of Costano Elementary School is 0.50, which is less than the diversity score at state average of 0.64. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#9496 out of 9602 schools
(Bottom 50%)
(Bottom 50%)
Math Test Scores (% Proficient)
3%
33%
Reading/Language Arts Test Scores (% Proficient)
15%
47%
Science Test Scores (% Proficient)
≤5%
29%
Student : Teacher Ratio
18:1
22:1
American Indian
n/a
1%
Asian
1%
12%
Hispanic
68%
55%
Black
9%
5%
White
3%
21%
Hawaiian
17%
n/a
Two or more races
2%
6%
All Ethnic Groups
Eligible for Free Lunch
82%
51%
Eligible for Reduced Lunch (20-21)
3%
6%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), CA Dept. of Education
Frequently Asked Questions
What is Costano Elementary School's ranking?
Costano Elementary School is ranked #9496 out of 9,602 schools, which ranks it among the bottom 50% of public schools in California.
What percent of students have achieved state testing proficiency in math and reading?
3% of students have achieved math proficiency (compared to the 33% CA state average), while 15% of students have achieved reading proficiency (compared to the 47% CA state average).
How many students attend Costano Elementary School?
348 students attend Costano Elementary School.
What is the racial composition of the student body?
68% of Costano Elementary School students are Hispanic, 17% of students are Hawaiian, 9% of students are Black, 3% of students are White, 2% of students are Two or more races, and 1% of students are Asian.
What is the student:teacher ratio of Costano Elementary School?
Costano Elementary School has a student ration of 18:1, which is lower than the California state average of 22:1.
What grades does Costano Elementary School offer ?
Costano Elementary School offers enrollment in grades Kindergarten-5
What school district is Costano Elementary School part of?
Costano Elementary School is part of Ravenswood City Elementary School District.
School Reviews
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