Costano Elementary School serves 400 students in grades Kindergarten-5.
The percentage of students achieving proficiency in math is 15-19% (which is lower than the California state average of 40%) for the 2018-19 school year. The percentage of students achieving proficiency in reading/language arts is 20-24% (which is lower than the California state average of 51%) for the 2018-19 school year.
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).
- 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
Costano Elementary School's student population of 400 students has declined by 21% over five school years.
The teacher population of 23 teachers has stayed relatively flat over five school years.
Total Classroom Teachers
Students by Grade
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.
Definition of Terms 2021-2022 School Year Data
State Level (CA)
Math Test Scores (% Proficient)(18-19)
Reading/Language Arts Test Scores (% Proficient)(18-19)
Student : Teacher Ratio
Two or more races
All Ethnic Groups
Eligible for Free Lunch
Eligible for Reduced Lunch (20-21)
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.
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