Serving 400 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 15-19% (which is lower than the California state average of 40%). The percentage of students achieving proficiency in reading/language arts is 20-24% (which is lower than the California state average of 51%).
The student:teacher ratio of 17:1 is lower than the California state level of 21:1.
Minority enrollment is 99% of the student body (majority Hispanic), which is higher than the California state average of 79% (majority Hispanic).
Quick Stats (2024)
- Grades: Kindergarten-5
- Enrollment: 400 students
- Student:Teacher Ratio: 17:1
- Minority Enrollment: 99%
- Math Proficiency: 15-19% (Top 1% in CA)
- Reading Proficiency: 20-24% (Top 1%)
- 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
Student Attention
School Overview
Costano Elementary School's student population of 400 students has grown by 11% over five school years.
The teacher population of 23 teachers has grown by 43% over five school years.
Grades Offered
Grades Kindergarten-5
Total Students
400 students
Gender %
Total Classroom Teachers
23 teachers
Students by Grade
School Calendar
School Rankings
The diversity score of Costano Elementary School is 0.41, which is less than the diversity score at state average of 0.63. The school's diversity has stayed relatively flat over five school years.
Math Test Scores (% Proficient)
(18-19)15-19%
40%
Reading/Language Arts Test Scores (% Proficient)
(18-19)20-24%
51%
Student : Teacher Ratio
17:1
21:1
American Indian
n/a
1%
Asian
1%
12%
Hispanic
75%
56%
Black
7%
5%
White
1%
21%
Hawaiian
15%
n/a
Two or more races
1%
5%
All Ethnic Groups
Eligible for Free Lunch
75%
51%
Eligible for Reduced Lunch (20-21)
3%
6%
School Statewide Testing
School District Name
Source: 2021-2022 (latest school year available) National Center for Education Statistics (NCES), CA Dept. of Education
Frequently Asked Questions
What percent of students have achieved state testing proficiency in math and reading?
15-19% of students have achieved math proficiency (compared to the 40% CA state average), while 20-24% of students have achieved reading proficiency (compared to the 51% CA state average).
How many students attend Costano Elementary School?
400 students attend Costano Elementary School.
What is the racial composition of the student body?
75% of Costano Elementary School students are Hispanic, 15% of students are Hawaiian, 7% of students are Black, 1% of students are Asian, 1% of students are White, and 1% of students are Two or more races.
What is the student:teacher ratio of Costano Elementary School?
Costano Elementary School has a student ration of 17:1, which is lower than the California state average of 21:1.
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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