Enrollment
2,457
Texas · 2024-25 NCES data
2024-25 NCES data High school (grades 9-12) NCES 480870000253
Lamar H S — Arlington, TX
Federal NCES profile for Lamar H S, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators — Resource Investment Index 65/100.
👥 Class size 38
📚 AP courses 100
🌟 Gifted program 70
🎓 Counselors 50
How this works: Each indicator above is scored 0–100 from federal NCES and CRDC data, then averaged into the Resource Investment Index. This measures resource allocation — staffing, programs, and support services — not standardized test scores or academic outcomes. Full methodology →
School address
District: Arlington Isd · Texas
Public location data per NCES (National Center for Education Statistics) Common Core of Data. Verify the school's current address on the NCES CCD record.
Teachers (FTE)
165.0
Federal CCD staff survey
Students per teacher
15.4:1
vs 14.6:1 Texas avg
+5% vs state
Free-lunch eligible
69.2%
vs 61.9% Texas avg
+12% vs state
Student-teacher ratio in context
How Lamar H S compares with Texas and U.S. medians
The federal record — no proprietary index, no editorial formula.
PlainSchools publishes the actual federal measurements — enrollment, staffing, demographics, discipline, and finance — straight from the NCES Common Core of Data, CRDC, and F-33 surveys. No composite rating, no opinion-based score on top. You get the same raw numbers researchers and policymakers use, with benchmarks, spending context, and equity indicators computed from the same federal datasets. Full methodology linked below.
What this school's NCES data tells you
Lamar H S reports 2,457 enrolled students to the National Center for Education Statistics (NCES) alongside 165.0 full-time-equivalent teachers, producing a 15.4:1 student-teacher ratio. That figure sits 5% above the Texas state mean of 14.6:1, signalling larger average class loads than peers in the same state. Against the national 2024-25 average of 15.9:1, it is 3% lower, a useful calibration for families comparing districts across state lines.
Title I and federal lunch eligibility offer another window into the student body: 69.2% of pupils qualify for free meals, a proxy for household income that federal programs use to direct funding. The free-lunch share is 12% above the Texas average and 34% above the national baseline. The school offers 25 Advanced Placement courses, a stronger academic pipeline indicator than enrollment alone. Counselor coverage works out to roughly 248 students per counselor, meeting the American School Counselor Association recommendation of 250:1.
On the finance side, the surrounding Arlington Isd spends $14,300 per pupil district-wide, below the Texas average of $17,150 and below the national average of $19,490. Revenue comes 57.0% from local sources (property taxes), 23.9% from the state, and 19.1% from federal programs per the NCES F-33 finance survey. Taken together, these measurements produce a Resource Investment Index of 65/100 (B-), calculated from 4 distinct NCES and CRDC indicators measuring resource allocation rather than academic outcomes.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Lamar H S compares
Cross-validating school-level NCES values against Texas state and U.S. national means lets readers see whether this school is an outlier or in line with peers.
| Metric | This school | vs Texas | Texas avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 15.4:1 | ▲ 5% | 14.6:1 | 15.9:1 |
| Free-lunch eligible | 69.2% | ▲ 12% | 61.9% | 51.8% |
| Enrollment | 2,457 | top 98% | — | — |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
What the federal data reveals about equity at this school
Federal measurements — not ratings — surface the resource and opportunity picture. Below are the indicators that researchers, civil-rights monitors, and funding formulas use to assess equity.
Economic need
69.2%
free-lunch eligible
— 12% above the Texas average of 61.9%
Above the 40% Title I schoolwide threshold — federal funds support the whole school, not individual students.
Staffing depth
15.4:1
students per teacher
— 5% above state mean
Top 63% in Texas — lower ratio than 37% of state schools
Between 15:1 and 20:1 — in line with the typical U.S. public-school staffing range.
Funding equity
$14,300
per pupil, district-wide
— below Texas avg of $17,150
Below the U.S. average per-pupil spend — funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors9.9 FTE
Per 248 students — the combined health-and-guidance staffing load for this school.
Discipline context
233
in-school suspensions + 250 out-of-school
Suspension rate: 9.5 per 100 students. Combined in-school and out-of-school rate: 19.7 per 100 students. Reported via the Civil Rights Data Collection. Includes 26 expulsions.
Overview
Enrollment 2,457 Top 98% in Texas — larger than 2% of 9,061 state schools
Teachers (FTE) 165.0
Students per teacher 15.4:1 +5% vs state
Free-lunch eligible 69.2% +12% vs state
NCES ID 480870000253
Student demographics
Hispanic or Latino 48.6%
African American 33.4%
White 12.1%
Two or More 3.5%
Asian 1.9%
American Indian / Alaska Native 0.4%
Native Hawaiian / Pacific Islander 0.2%
Largest group: Hispanic or Latino at 48.6% of enrollment.
Programs & staff
AP courses offered 25
Gifted & talented Yes
Counselors (FTE) 9.9
Students per counselor 248:1
Discipline & special education
In-school suspensions 233
Out-of-school suspensions 250
Expulsions 26
Funding & spending
District-wide per-pupil expenditure for Arlington Isd, which includes Lamar H S.
$14,300
Per student
-17%
vs Texas
Avg $17,150
-27%
vs U.S.
Avg $19,490
Revenue mix
Local 57.0%
State 23.9%
Federal 19.1%
Source: NCES F-33 School District Finance Survey District-level finance · FY 2021-22 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
Other Schools in This District
- Enrollment
- 3,535
- Students per teacher
- 18.3:1
- Enrollment
- 3,208
- Students per teacher
- 16.3:1
- Enrollment
- 2,580
- Students per teacher
- 15.7:1
- Enrollment
- 2,140
- Students per teacher
- 15.3:1
- Enrollment
- 1,554
- Students per teacher
- 13.2:1
Similar high schools in Arlington
6 comparable high schools (grades 9-12) serving the same city.
Martin H S
Standard public school
3,535 students 18.3:1 students per teacher
Sam Houston H S
Standard public school
3,208 students 16.3:1 students per teacher
Arlington H S
Standard public school
2,580 students 15.7:1 students per teacher
Bowie H S
Standard public school
2,140 students 15.3:1 students per teacher
Mansfield Timberview H S
Standard public school
1,788 students 14.9:1 students per teacher
Seguin H S
Standard public school
1,554 students 13.2:1 students per teacher
Educator & family resources
In-depth guides on understanding NCES data, school choice, and education funding.
Understanding NCES data
How CCD, CRDC and EDFacts feed every public-school number you see.
Choose a school district
Eight signals that matter more than the overall ranking number.
How schools are funded
Title I, F-33, state aid formulas and what per-pupil spending really means.
Chronic absenteeism
Why missing 10% of school matters and how it varies by district.
Magnet vs charter vs traditional
Three school types, three funding models, three sets of trade-offs.
School discipline data
What CRDC suspension and expulsion records do and don't reveal.
Frequently asked questions about Lamar H S
How many students attend Lamar H S?
Lamar H S has 2,457 students enrolled. It is a high school in ARLINGTON, TX.
What is the student-teacher ratio at Lamar H S?
The student-teacher ratio at Lamar H S is 15.4:1, which is 5% higher than the Texas average of 14.6:1 and 3% lower than the national average of 15.9:1.
What percentage of students receive free lunch at Lamar H S?
69.2% of students at Lamar H S are eligible for free lunch, compared to the Texas average of 61.9%.
What is the racial and ethnic makeup of Lamar H S?
The largest demographic group at Lamar H S is Hispanic or Latino at 48.6%. The school serves a diverse student body in ARLINGTON, TX.
What is the Resource Investment Index for Lamar H S?
Lamar H S has a Resource Investment Index of 65/100 (B-) based on 4 factors: student-teacher ratio, AP course offerings, counselor availability. This index measures federal resource allocation — staffing levels, program availability, and support services — not standardized test scores or academic outcomes.