Enrollment
370
California · 2024-25 NCES data
High school (grades 9-12) · Tranquillity, CA
Tranquillity High
Federal NCES profile for Tranquillity High, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 28/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 069113410214
👥 S:T ratio 38
📚 AP courses 20
🌟 Gifted program 30
🎓 Counselors 51
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Tranquillity High earns 28/100 on the Resource Investment Index, even as it posts class sizes smaller than 88% of California schools. It is also less racially and ethnically mixed than most California schools.
- 28
- Resource Index · Lower
- 15.4:1
- small classes for California
- 87.0%
- free-lunch eligible
- 370
- students enrolled
Tranquillity High has class sizes smaller than 88% of California schools. Computed live against every California school reporting to NCES.
School address
District: Golden Plains Unified · California
NCES ID 069113410214 Verify on NCES CCD record →
Teachers (FTE)
24.0
Federal CCD staff survey
Students per teacher
15.4:1
vs 21.5:1 California avg
-28% vs state
Free-lunch eligible
87.0%
vs 55.5% California avg
+57% vs state
Student-teacher ratio in context
How Tranquillity High compares with California and U.S. medians
What stands out at Tranquillity High
Tranquillity High is a high-poverty, mid-sized high school in Tranquillity, California, enrolling 370 students.
Classes run notably small here: at 15.4:1, Tranquillity High is leaner than roughly 88% of California schools and 28% under the state's 21.5:1 norm, more adult attention per pupil than most peers.
Economic need is high: 87.0% of students qualify for free meals, 57% above the California average, a Title I-weighted population that federal funding formulas prioritise.
With 370 students, its enrollment sits close to the California median campus size.
Its Resource Investment Index sits near the middle of the pack among 9,998 scored California schools.
Against 1,337 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #528.
Its student body is predominantly Hispanic or Latino (98% of enrollment), among the less diverse in the state (diversity index 4/100).
On the academic-pipeline side it reports 4 Advanced Placement courses.
Counselor coverage is strong, about 247 students per counselor, inside the American School Counselor Association's recommended 250:1.
Chronic absenteeism is elevated: 77.6% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
The federal civil-rights collection also records 15 expulsions at this campus for 2021-22.
Golden Plains Unified also operates San Joaquin Elementary (518 students) and Tranquillity Elementary (209 students) alongside Tranquillity High.
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 Tranquillity High compares
Tranquillity High on the metrics families compare, against California and U.S. means.
| Metric | This school | vs California | California avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 15.4:1 | ▼ 28% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 87.0% | ▲ 57% | 55.5% | 51.7% |
| Enrollment | 370 | top 65% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
15.4:1
Leaner classes than 43% of US schools, a middle-of-the-pack class size.
370
Bigger than 43% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
87.0%
free-lunch eligible
- 57% 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
15.4:1
students per teacher
- 28% below state mean
Top 12% in California - lower ratio than 88% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
77.6%
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
$18,384
per pupil, district-wide
- above California avg of $16,509
Somewhat above the U.S. public-school average, reflecting higher local or state investment per enrolled student.
Support staff
Counselors1.5 FTE
Per 247 students, the combined health-and-guidance staffing load for this school.
Discipline context
0
in-school suspensions + 52 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 14.1 per 100 students. Reported via the Civil Rights Data Collection. Includes 15 expulsions.
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
Hispanic or Latino 98.1%
White 1.1%
African American 0.5%
Asian 0.3%
Largest group: Hispanic or Latino at 98.1% of enrollment.
Student-body diversity index 3.7/100
Simpson diversity index - at 3.7, Tranquillity High is less mixed than the California school average of 46.0.
Programs
AP courses offered 4
Funding & spending
District-wide per-pupil expenditure for Golden Plains Unified, which includes Tranquillity High.
$18,384
Per student
+11%
vs California
Avg $16,509
+11%
vs U.S.
Avg $16,593
Revenue mix
Local 24.1%
State 61.9%
Federal 14.0%
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 Tranquillity High Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| San Joaquin Elementary | Larger | Similar economic need | Higher S:T ratio |
| Tranquillity Elementary | Smaller | Similar economic need | Higher S:T ratio |
| Cantua Elementary | Smaller | Similar economic need | Higher S:T ratio |
| Helm Elementary | Smaller | Similar economic need | Lower S:T ratio |
| Rio Del Rey High (Continuation) | Smaller | Similar economic need | Lower S:T ratio |
Comparisons are relative to Tranquillity High's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 518
- Students per teacher
- 19.9:1
- Resource Index
- 13/100
- Enrollment
- 209
- Students per teacher
- 20.9:1
- Resource Index
- 12/100
- Enrollment
- 184
- Students per teacher
- 20.4:1
- Resource Index
- 12/100
- Enrollment
- 60
- Students per teacher
- 12:1
- Resource Index
- 31/100
- Enrollment
- 10
- Students per teacher
- 10:1
- Resource Index
- 57/100
Similar high schools statewide
Matched by enrollment size and by staffing ratio across all of California, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~370 students)
Next steps
Verify locally before acting on Tranquillity High's federal record.
- Compare Tranquillity High against another school. Compare schools
- Golden Plains Unified'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 Tranquillity High
How many students attend Tranquillity High?
Tranquillity High has 370 students enrolled. It is a high school in Tranquillity, CA.
What is the student-teacher ratio at Tranquillity High?
The student-teacher ratio at Tranquillity High is 15.4:1, which is 28% lower than the California average of 21.5:1 and 2% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What percentage of students receive free lunch at Tranquillity High?
87.0% of students at Tranquillity High are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Tranquillity High?
The largest demographic group at Tranquillity High is Hispanic or Latino at 98.1% of enrollment, in Tranquillity, CA.
What is the Resource Investment Index for Tranquillity High?
Tranquillity High has a Resource Investment Index of 28/100 (lower reported resources relative to schools nationally) based on 5 factors: student-teacher ratio, AP course offerings, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
Is Tranquillity High a good school?
Tranquillity High earns 28/100 on the Resource Investment Index, even as it posts class sizes smaller than 88% of California schools. It is also less racially and ethnically mixed than most California 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 Golden Plains Unified?
Besides Tranquillity High, Golden Plains Unified also operates San Joaquin Elementary (518 students), Tranquillity Elementary (209 students), and Cantua Elementary (184 students). See the Golden Plains Unified 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.