Enrollment
160
Oklahoma · 2024-25 NCES data
Elementary school (grades K-5) · Duncan, OK
Mark Twain Es
Federal NCES profile for Mark Twain Es, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 71/100.
2024-25 NCES dataElementary school (grades K-5)NCES 401029000451
👥 S:T ratio 57
🌟 Gifted program 70
🎓 Counselors 68
📋 Attendance 89
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Mark Twain Es earns 71/100 on the Resource Investment Index, with class sizes smaller than 92% of Oklahoma schools.
- #1 of 5
- elementary schools in Duncan · Resource Index
- 71
- Resource Index · Higher
- 10.7:1
- small classes for Oklahoma
- 160
- students enrolled
Mark Twain Es has class sizes smaller than 92% of Oklahoma schools. Computed live against every Oklahoma school reporting to NCES.
By Resource Investment Index, Mark Twain Es ranks #1 of 5 elementary schools in Duncan, OK.
School address
Teachers (FTE)
15.0
Federal CCD staff survey
Students per teacher
10.7:1
vs 16.1:1 Oklahoma avg
-34% vs state
Student-teacher ratio in context
How Mark Twain Es compares with Oklahoma and U.S. medians
What stands out at Mark Twain Es
Mark Twain Es is a mid-sized elementary school in Duncan, Oklahoma, enrolling 160 students.
Classes run notably small here: at 10.7:1, Mark Twain Es is leaner than roughly 92% of Oklahoma schools and 34% under the state's 16.1:1 norm, more adult attention per pupil than most peers.
Enrollment of 160 puts it in the smaller third of Oklahoma schools by headcount.
Its Resource Investment Index outscores 97% of the 1,778 Oklahoma schools with a score on record, a top-tier result on this measure.
Its student body is led by White (54%) and Hispanic or Latino (19%) (diversity index 64/100).
Counselor coverage is strong, about 160 students per counselor, inside the American School Counselor Association's recommended 250:1.
Attendance holds up well here: only 4.4% of students were chronically absent, below the typical post-pandemic national figure.
Its district draws 19.9% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
Among Duncan's elementary schools, it stands alongside Emerson Es (336 students): Mark Twain Es is smaller than that campus by headcount and runs leaner classes (10.7:1 vs 14.6:1).
Duncan also operates Duncan Hs (981 students) and Duncan Ms (696 students) alongside Mark Twain Es.
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Mark Twain Es compares
Mark Twain Es on the metrics families compare, against Oklahoma and U.S. means.
| Metric | This school | vs Oklahoma | Oklahoma avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 10.7:1 | ▼ 34% | 16.1:1 | 15.7:1 |
| Enrollment | 160 | top 74% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
10.7:1
Leaner classes than 85% of US schools, among the more generously staffed nationally.
160
Bigger than 16% of US schools by enrollment, a small campus.
Equity indicators (what these measure)
Staffing depth
10.7:1
students per teacher
- 34% below state mean
Top 8% in Oklahoma - lower ratio than 92% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
4.4%
chronically absent (missed 10%+ of school days)
Below 5%, comfortably under the pre-pandemic national baseline for chronic absenteeism.
Funding equity
$10,861
per pupil, district-wide
- below Oklahoma avg of $12,594
Well below the U.S. average per-pupil spend, a notably leaner funding position that may affect programs, facilities, and staffing.
Support staff
Counselors1.0 FTE
Per 160 students, the combined health-and-guidance staffing load for this school.
Discipline context
0
in-school suspensions + 5 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 3.1 per 100 students. Reported via the Civil Rights Data Collection.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
Student demographics
White 53.8%
Hispanic or Latino 19.4%
Two or More 15.6%
American Indian / Alaska Native 5.0%
African American 3.8%
Asian 2.5%
Largest group: White at 53.8% of enrollment.
Student-body diversity index 64.4/100
Simpson diversity index - at 64.4, Mark Twain Es is more mixed than the Oklahoma school average of 59.6.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Duncan, which includes Mark Twain Es.
$10,861
Per student
-14%
vs Oklahoma
Avg $12,594
-35%
vs U.S.
Avg $16,593
Revenue mix
Local 31.4%
State 48.7%
Federal 19.9%
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.
How Mark Twain Es Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Duncan Hs | Larger | No free-lunch data | Higher S:T ratio |
| Duncan Ms | Larger | No free-lunch data | Higher S:T ratio |
| Emerson Es | Larger | No free-lunch data | Higher S:T ratio |
| Horace Mann Es | Larger | No free-lunch data | Higher S:T ratio |
| Woodrow Wilson Es | Larger | No free-lunch data | Higher S:T ratio |
Comparisons are relative to Mark Twain Es's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 981
- Students per teacher
- 18.9:1
- Resource Index
- 51/100
- Enrollment
- 696
- Students per teacher
- 14.5:1
- Resource Index
- 58/100
- Enrollment
- 336
- Students per teacher
- 14.6:1
- Resource Index
- 53/100
- Enrollment
- 327
- Students per teacher
- 15.6:1
- Resource Index
- 57/100
- Enrollment
- 321
- Students per teacher
- 17.8:1
- Resource Index
- 50/100
Similar elementary schools in Duncan
4 comparable elementary schools (grades K-5) serving the same city.
Emerson Es
Standard public school
336 students 14.6:1 students per teacher
Horace Mann Es
Standard public school
327 students 15.6:1 students per teacher
Woodrow Wilson Es
Standard public school
321 students 17.8:1 students per teacher
Plato Es
Standard public school
283 students 18.9:1 students per teacher
Similar elementary schools statewide
Matched by enrollment size and by staffing ratio across all of Oklahoma, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~160 students)
Similar student-teacher ratio (~10.7:1)
Next steps
Verify locally before acting on Mark Twain Es's federal record.
- Compare Mark Twain Es against another school. Compare schools
- Duncan's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
Frequently asked questions about Mark Twain Es
How many students attend Mark Twain Es?
Mark Twain Es has 160 students enrolled. It is an elementary school in Duncan, OK.
What is the student-teacher ratio at Mark Twain Es?
The student-teacher ratio at Mark Twain Es is 10.7:1, which is 34% lower than the Oklahoma average of 16.1:1 and 32% 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 Mark Twain Es?
The largest demographic group at Mark Twain Es is White at 53.8% of enrollment, in Duncan, OK. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 64.4/100.
What is the Resource Investment Index for Mark Twain Es?
Mark Twain Es has a Resource Investment Index of 71/100 (higher reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Mark Twain Es rank among elementary schools in Duncan?
By Resource Investment Index, Mark Twain Es ranks #1 of 5 elementary schools in Duncan, OK. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all elementary schools in Duncan on the city page.
Is Mark Twain Es a good school?
Mark Twain Es earns 71/100 on the Resource Investment Index, with class sizes smaller than 92% of Oklahoma schools. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
What other schools are in Duncan?
Besides Mark Twain Es, Duncan also operates Duncan Hs (981 students), Duncan Ms (696 students), and Emerson Es (336 students). See the Duncan district page for the complete list.
Related tools
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, or report a data error. Data current as of June 2026.