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Costano Elementary

Composite Score
out of 100
State Percentile
of elementary schools
State Rank
668 students tested

School overview

Enrollment
318 students
Student-Teacher Ratio
18:1
Free/Reduced Lunch
85%
Teachers
18 full-time

Student demographics

Hispanic 71.4%
White 2.2%
Black 6.9%
Other 19.5%

Performance breakdown

Performance breakdown for Costano Elementary
CategoryPercentage
Exceeded Standard2.4%
Met Standard11.5%
Below Standard86.1%

What other rankings don't show you

Most rating sites report "14% proficient" for Costano Elementary and stop there. Here's what that number hides:

2.4% of students exceeded standard while 11.5% merely met it. That exceeded rate is 18.5 points below the state average of 21.0%. That's near the Ravenswood City Elementary district average of 1.6%. The 7 nearby schools within ~3 miles average 42.9% exceeded — 40.5 points higher. The gap between "met" and "exceeded" is the difference between a school that clears the bar and one that raises it.

Proficiency drops by 10.1 percentage points from grade 3 to grade 5 — a signal that the school may not be sustaining early gains.

Chronic absenteeism is 43.7%, above the state average of 18.7%.

Key metrics

% Exceeded Standard
2.4%
Students scoring above proficient
% Met or Above
13.9%
Students meeting standard
Growth (G3→G5)
-10.1pp
Change in proficiency rate
Chronic Absenteeism
43.7%
Students missing 10%+ of days
Suspension Rate
1.4%
Students suspended at least once
Total Tested
668
Across all grades & subjects

ELA scores by grade

Grade Tested Exceeded Met Nearly Met Not Met Met+Above
3rd 53 7.5% 9.4% 24.5% 58.5% 17.0%
4th 51 0.0% 11.8% 37.3% 51.0% 11.8%
5th 58 1.7% 17.2% 12.1% 69.0% 19.0%

Math scores by grade

Grade Tested Exceeded Met Nearly Met Not Met Met+Above
3rd 55 5.5% 20.0% 14.6% 60.0% 25.4%
4th 55 0.0% 7.3% 47.3% 45.5% 7.3%
5th 62 0.0% 3.2% 11.3% 85.5% 3.2%