- Enrollment
- 829
- Students per teacher
- 14.1:1
- Resource Index
- 39/100
Elementary school (grades K-5) · Crystal Lake, IL
South Elem School
Federal NCES profile for South Elem School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 61/100.
2024-25 NCES dataElementary school (grades K-5)NCES 171135001364
👥 S:T ratio 59
🌟 Gifted program 70
📋 Attendance 53
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
South Elem School earns 61/100 on the Resource Investment Index, with class sizes smaller than 88% of Illinois schools.
- #1 of 9
- elementary schools in Crystal Lake · Resource Index
- 61
- Resource Index · Higher
- 10.3:1
- small classes for Illinois
- 390
- students enrolled
South Elem School has class sizes smaller than 88% of Illinois schools. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, South Elem School ranks #1 of 9 elementary schools in Crystal Lake, IL.
School address
District: Crystal Lake Ccsd 47 · Illinois
NCES ID 171135001364 Verify on NCES CCD record →
NCES CCD universe card
School universe 171135001364 · Crystal Lake, IL Elementary · SMALL · TRAD
390 enr · 10.3:1 · RII 61
Nearest enrollment peer: Hannah Beardsley Middle School (829 students)
Resource Investment Index #1 of 9 elementary schools in Crystal Lake. NCES Common Core of Data stamps for this campus. Read with this school → · District book → · Illinois schools → · Find another →
South Elem School in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Hannah Beardsl
Hannah Beardsley Middle School
829 students
- Lundahl Middle
Lundahl Middle School
797 students
- Richard F Bern
Richard F Bernotas Middle Sch
737 students
- North Elem Sch
North Elem School
638 students
- Coventry Elem
Coventry Elem School
629 students
- This school
South Elem School
390 students
What this shows South Elem School reports 390 students on the CCD universe file.
How South Elem School compares
South Elem School on the metrics families compare, against Illinois and U.S. means.
| Metric | This school | vs Illinois | Illinois avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 10.3:1 | ▼ 26% | 14:1 | 15.7:1 |
| Enrollment | 390 | top 47% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
10.3:1
Leaner classes than 87% of US schools, among the more generously staffed nationally.
390
Bigger than 46% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Staffing depth
10.3:1
students per teacher
- 26% below state mean
Top 12% in Illinois - lower ratio than 88% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
18.7%
chronically absent (missed 10%+ of school days)
In the 15-20% range, nearing the "high" absenteeism threshold.
Funding equity
$16,871
per pupil, district-wide
- below Illinois avg of $18,196
Close to the U.S. public-school average per-pupil spend.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
0
in-school suspensions + 0 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 0.0 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
White 79.7%
Hispanic or Latino 14.9%
Two or More 4.4%
Asian 0.8%
African American 0.3%
Largest group: White at 79.7% of enrollment.
Student-body diversity index 34.1/100
Simpson diversity index - at 34.1, South Elem School is less mixed than the Illinois school average of 38.9.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Crystal Lake Ccsd 47, which includes South Elem School.
$16,871
Per student
-7%
vs Illinois
Avg $18,196
-4%
vs U.S.
Avg $17,658
Revenue mix
Local 61.8%
State 31.5%
Federal 6.8%
Source: NCES F-33 School District Finance Survey District-level finance · FY 2022-23 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
How South Elem School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Hannah Beardsley Middle School | Larger | No free-lunch data | Higher S:T ratio |
| Lundahl Middle School | Larger | No free-lunch data | Higher S:T ratio |
| Richard F Bernotas Middle Sch | Larger | No free-lunch data | Similar S:T ratio |
| North Elem School | Larger | No free-lunch data | Higher S:T ratio |
| Coventry Elem School | Larger | No free-lunch data | Higher S:T ratio |
Comparisons are relative to South Elem School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 797
- Students per teacher
- 13.3:1
- Resource Index
- 52/100
- Enrollment
- 737
- Students per teacher
- 11:1
- Resource Index
- 52/100
- Enrollment
- 638
- Students per teacher
- 13.3:1
- Resource Index
- 52/100
- Enrollment
- 629
- Students per teacher
- 13.4:1
- Resource Index
- 50/100
Similar elementary schools in Crystal Lake
6 comparable elementary schools (grades K-5) serving the same city.
North Elem School
Standard public school
638 students 13.3:1 students per teacher
Coventry Elem School
Standard public school
629 students 13.4:1 students per teacher
West Elem School
Standard public school
520 students 13.7:1 students per teacher
Husmann Elem School
Standard public school
518 students 15.2:1 students per teacher
Indian Prairie Elem School
Standard public school
496 students 13.4:1 students per teacher
Woods Creek Elementary School
Standard public school
489 students 11.9:1 students per teacher
Nationwide elementary schools with similar size or staffing
Out-of-state peers matched by enrollment and by student-teacher ratio, not the same-city or same-district lists above.
Similar enrollment (~390 students)
Similar student-teacher ratio (~10.3:1)
Frequently asked questions about South Elem School
How many students attend South Elem School?
South Elem School has 390 students enrolled. It is an elementary school in Crystal Lake, IL.
What is the student-teacher ratio at South Elem School?
The student-teacher ratio at South Elem School is 10.3:1, which is 26% lower than the Illinois average of 14:1 and 34% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What is the racial and ethnic makeup of South Elem School?
The largest demographic group at South Elem School is White at 79.7% of enrollment, in Crystal Lake, IL.
What is the Resource Investment Index for South Elem School?
South Elem School has a Resource Investment Index of 61/100 (higher reported resources relative to schools nationally) based on 3 factors: student-teacher ratio, gifted-program reporting, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology).
How does South Elem School rank among elementary schools in Crystal Lake?
By Resource Investment Index, South Elem School ranks #1 of 9 elementary schools in Crystal Lake, IL. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all elementary schools in Crystal Lake on the city page.
What other schools are in Crystal Lake Ccsd 47?
Besides South Elem School, Crystal Lake Ccsd 47 also operates Hannah Beardsley Middle School (829 students), Lundahl Middle School (797 students), and Richard F Bernotas Middle Sch (737 students). See the Crystal Lake Ccsd 47 district page for the complete list.
Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error. Data current as of August 2026.