- Enrollment
- 2,006
- Students per teacher
- 19.1:1
- Resource Index
- 47/100
High school (grades 9-12) · Slidell, LA
Slidell High School
Federal NCES profile for Slidell High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 42/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 220165001294
👥 S:T ratio 29
🌟 Gifted program 70
🎓 Counselors 17
📋 Attendance 51
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Slidell High School earns 42/100 on the Resource Investment Index, with class sizes near the Louisiana median. It is also one of the largest schools in Louisiana.
- #3 of 3
- high schools in Slidell · Resource Index
- 42
- Resource Index · Typical
- 17.8:1
- students per teacher
- 45.0%
- free-lunch eligible
Slidell High School has class sizes near the Louisiana median. Computed live against every Louisiana school reporting to NCES.
By Resource Investment Index, Slidell High School ranks #3 of 3 high schools in Slidell, LA.
School address
District: St. Tammany Parish · Louisiana
NCES ID 220165001294 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
-50 students YoY
Slidell High School held near 1,833 students from 2022-23 to 2023-24 (-50 headcount).
Teacher FTE added 93.2 → 124.5 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
-50 students YoY 220165001294 · Slidell, LA High · MID · TRAD
1,654 enr · 17.8:1 · 45.0% lunch · RII 42
Nearest enrollment peer: Mandeville High School (2,006 students)
Slidell High School held near 1,833 students from 2022-23 to 2023-24 (-50 headcount). Teacher FTE added 93.2 → 124.5 across the same CCD years. Read with this school → · District book → · Louisiana schools → · Find another →
Slidell High School in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Mandeville Hig
Mandeville High School
2,006 students
- This school
Slidell High School
1,654 students
- Covington High
Covington High School
1,600 students
- Northshore Hig
Northshore High School
1,518 students
- Joseph B. Lanc
Joseph B. Lancaster Elementary School
1,480 students
- Fontainebleau
Fontainebleau High School
1,451 students
What this shows Slidell High School reports 1,654 students on the CCD universe file.
How Slidell High School compares
Slidell High School held steady on CCD headcount: ratios and free-lunch share vs Louisiana and U.S. means.
| Metric | This school | vs Louisiana | Louisiana avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 17.8:1 | ▲ 6% | 16.8:1 | 15.7:1 |
| Free-lunch eligible | 45.0% | ▼ 28% | 62.5% | 51.7% |
| Enrollment | 1,654 | top 2% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
17.8:1
Leaner classes than 26% of US schools, heavier class loads than most.
1,654
Bigger than 97% of US schools by enrollment, a large campus nationally.
Equity indicators methodology
Economic need
45.0%
free-lunch eligible
- 28% below the Louisiana average of 62.5%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
17.8:1
students per teacher
- 6% above state mean
Top 67% in Louisiana - lower ratio than 33% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
19.6%
chronically absent (missed 10%+ of school days)
In the 15-20% range, nearing the "high" absenteeism threshold.
Funding equity
$14,823
per pupil, district-wide
- below Louisiana avg of $16,812
Somewhat below the U.S. average per-pupil spend; funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors4.0 FTE
Per 414 students, the combined health-and-guidance staffing load for this school.
Discipline context
107
in-school suspensions + 272 out-of-school
Suspension rate: 6.5 per 100 students. Combined in-school and out-of-school rate: 22.9 per 100 students. Reported via the Civil Rights Data Collection. Includes 42 expulsions.
Student demographics
White 45.1%
African American 37.1%
Hispanic or Latino 10.3%
Two or More 5.8%
Asian 1.0%
American Indian / Alaska Native 0.5%
Native Hawaiian / Pacific Islander 0.2%
Largest group: White at 45.1% of enrollment.
Student-body diversity index 64.5/100
Simpson diversity index - at 64.5, Slidell High School is more mixed than the Louisiana school average of 43.9.
Programs
AP courses offered 2
Gifted & talented Yes
District finance for St. Tammany Parish reports $14,823 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Slidell High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Mandeville High School | Similar size | Lower economic need | Similar S:T ratio |
| Covington High School | Similar size | Similar economic need | Higher S:T ratio |
| Northshore High School | Similar size | Lower economic need | Similar S:T ratio |
| Joseph B. Lancaster Elementary School | Similar size | Lower economic need | Higher S:T ratio |
| Fontainebleau High School | Similar size | Lower economic need | Similar S:T ratio |
Comparisons are relative to Slidell High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,600
- Students per teacher
- 19.5:1
- Resource Index
- 35/100
- Enrollment
- 1,518
- Students per teacher
- 18.5:1
- Resource Index
- 49/100
- Enrollment
- 1,480
- Students per teacher
- 21.1:1
- Resource Index
- 45/100
- Enrollment
- 1,451
- Students per teacher
- 17.1:1
- Resource Index
- 45/100
Similar high schools in Slidell
2 comparable high schools (grades 9-12) serving the same city.
Nationwide high 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 (~1,654 students)
Frequently asked questions about Slidell High School
How many students attend Slidell High School?
Slidell High School has 1,654 students enrolled. It is a high school in Slidell, LA. CCD year-over-year: 1,883 (2022-23) → 1,833 (2023-24), nearly flat (-50).
What is the student-teacher ratio at Slidell High School?
The student-teacher ratio at Slidell High School is 17.8:1, which is 6% higher than the Louisiana average of 16.8:1 and 13% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Slidell High School?
45.0% of students at Slidell High School are eligible for free lunch, compared to the Louisiana average of 62.5%.
What is the racial and ethnic makeup of Slidell High School?
The largest demographic group at Slidell High School is White at 45.1% of enrollment, in Slidell, LA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 64.5/100.
What is the Resource Investment Index for Slidell High School?
Slidell High School has a Resource Investment Index of 42/100 (typical 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 Slidell High School rank among high schools in Slidell?
By Resource Investment Index, Slidell High School ranks #3 of 3 high schools in Slidell, LA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all high schools in Slidell on the city page.
What other schools are in St. Tammany Parish?
Besides Slidell High School, St. Tammany Parish also operates Mandeville High School (2,006 students), Covington High School (1,600 students), and Northshore High School (1,518 students). See the St. Tammany Parish district page for the complete list.