- Enrollment
- 2,746
- Students per teacher
- 22.3:1
- Resource Index
- 16/100
Elementary school (grades K-5) · Calexico, CA
Mains Elementary
Federal NCES profile for Mains Elementary, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 14/100.
2024-25 NCES dataElementary school (grades K-5)NCES 060690000639
👥 S:T ratio 9
🌟 Gifted program 30
🎓 Counselors 18
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Mains Elementary earns 14/100 on the Resource Investment Index, with class sizes near the California median. It is also less racially and ethnically mixed than most California schools.
- #2 of 7
- elementary schools in Calexico · Resource Index
- 14
- Resource Index · Lower
- 22.7:1
- students per teacher
- 86.3%
- free-lunch eligible
Mains Elementary has class sizes near the California median. Computed live against every California school reporting to NCES.
By Resource Investment Index, Mains Elementary ranks #2 of 7 elementary schools in Calexico, CA.
School address
District: Calexico Unified · California
NCES ID 060690000639 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
+9 students YoY
Mains Elementary held near 425 students from 2022-23 to 2023-24 (+9 headcount).
Teacher FTE held 18.0 → 18.0 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
+9 students YoY 060690000639 · Calexico, CA Elementary · SMALL · TRAD
408 enr · 22.7:1 · 86.3% lunch · RII 14
Nearest enrollment peer: Calexico High (2,746 students)
Mains Elementary held near 425 students from 2022-23 to 2023-24 (+9 headcount). Teacher FTE held 18.0 → 18.0 across the same CCD years. Read with this school → · District book → · California schools → · Find another →
Mains Elementary in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Calexico High
Calexico High
2,746 students
- Cesar Chavez E 765
Cesar Chavez Elementary
765 students
- Enrique Camare 674
Enrique Camarena Jr. High
674 students
- Jefferson Elem 625
Jefferson Elementary
625 students
- William Moreno 618
William Moreno Junior High
618 students
- This school 408
Mains Elementary
408 students
What this shows Mains Elementary reports 408 students on the CCD universe file.
How Mains Elementary compares
Mains Elementary held steady on CCD headcount: ratios and free-lunch share vs California and U.S. means.
| Metric | This school | vs California | California avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 22.7:1 | ▲ 6% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 86.3% | ▲ 55% | 55.5% | 51.7% |
| Enrollment | 408 | top 59% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
22.7:1
Leaner classes than 9% of US schools, heavier class loads than most.
408
Bigger than 49% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Economic need
86.3%
free-lunch eligible
- 55% above the California average of 55.5%
Well above the 40% Title I schoolwide threshold, among the highest-need profiles in the state; federal funds support the whole school, not individual students.
Staffing depth
22.7:1
students per teacher
- 6% above state mean
Top 59% in California - lower ratio than 41% of state schools
Above 20:1, running heavier than the typical U.S. public school; staffing is comparatively stretched.
Engagement
57.6%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
Funding equity
$20,464
per pupil, district-wide
- above California avg of $18,665
Somewhat above the U.S. public-school average, reflecting higher local or state investment per enrolled student.
Support staff
Counselors1.0 FTE
Per 408 students, the combined health-and-guidance staffing load for this school.
Discipline context
4
in-school suspensions + 4 out-of-school
Suspension rate: 1.0 per 100 students. Combined in-school and out-of-school rate: 2.0 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
Hispanic or Latino 99.0%
African American 0.5%
White 0.2%
American Indian / Alaska Native 0.2%
Largest group: Hispanic or Latino at 99.0% of enrollment.
Student-body diversity index 2.0/100
Simpson diversity index - at 2.0, Mains Elementary is less mixed than the California school average of 46.0.
Programs
District finance for Calexico Unified reports $20,464 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Mains Elementary Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Calexico High | Larger | Lower economic need | Similar S:T ratio |
| Cesar Chavez Elementary | Larger | Lower economic need | Similar S:T ratio |
| Enrique Camarena Jr. High | Larger | Similar economic need | Similar S:T ratio |
| Jefferson Elementary | Larger | Similar economic need | Higher S:T ratio |
| William Moreno Junior High | Larger | Similar economic need | Similar S:T ratio |
Comparisons are relative to Mains Elementary's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 765
- Students per teacher
- 23.9:1
- Resource Index
- 9/100
- Enrollment
- 674
- Students per teacher
- 23.2:1
- Resource Index
- 9/100
- Enrollment
- 625
- Students per teacher
- 25:1
- Resource Index
- 7/100
- Enrollment
- 618
- Students per teacher
- 21.3:1
- Resource Index
- 11/100
Similar elementary schools in Calexico
6 comparable elementary schools (grades K-5) serving the same city.
Cesar Chavez Elementary
Standard public school
765 students 23.9:1 students per teacher
Jefferson Elementary
Standard public school
625 students 25:1 students per teacher
Rockwood Elementary
Standard public school
617 students 26.8:1 students per teacher
Dool Elementary
Standard public school
568 students 21.8:1 students per teacher
Kennedy Gardens Elementary
Standard public school
484 students 23:1 students per teacher
Blanche Charles Elementary
Standard public school
419 students 22.1:1 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 (~408 students)
Frequently asked questions about Mains Elementary
How many students attend Mains Elementary?
Mains Elementary has 408 students enrolled. It is an elementary school in Calexico, CA. CCD year-over-year: 416 (2022-23) → 425 (2023-24), nearly flat (+9).
What is the student-teacher ratio at Mains Elementary?
The student-teacher ratio at Mains Elementary is 22.7:1, which is 6% higher than the California average of 21.5:1 and 45% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Mains Elementary?
86.3% of students at Mains Elementary are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Mains Elementary?
The largest demographic group at Mains Elementary is Hispanic or Latino at 99.0% of enrollment, in Calexico, CA.
What is the Resource Investment Index for Mains Elementary?
Mains Elementary has a Resource Investment Index of 14/100 (lower reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, gifted-program reporting, counselor availability, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Mains Elementary rank among elementary schools in Calexico?
By Resource Investment Index, Mains Elementary ranks #2 of 7 elementary schools in Calexico, CA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all elementary schools in Calexico on the city page.
What other schools are in Calexico Unified?
Besides Mains Elementary, Calexico Unified also operates Calexico High (2,746 students), Cesar Chavez Elementary (765 students), and Enrique Camarena Jr. High (674 students). See the Calexico Unified district page for the complete list.