Enrollment
360
High
DISTRICT 258 · STATE 788
SCHOOL COMMUNITY·DERBY SCHOOL DISTRICT·NCES 090111000175
Derby High School
75 Chatfield Street, Derby, CT 06418 · (203) 736-5032 · Naugatuck Valley Planning Region
GRADES 09–12HIGH21-SUBURBTITLE IREGULAR SCHOOL360 STUDENTS
Student : Teacher
9.7:1
37 FTE teachers
DISTRICT 11.6:1 · STATE 12.3:1
Free / Reduced Lunch
54%
193 students
DISTRICT 51% · STATE 44%
Community
0
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Grade 9 | 88 | 24% |
| Grade 10 | 94 | 26% |
| Grade 11 | 75 | 21% |
| Grade 12 | 103 | 29% |
Student demographics
68%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 68% · STATE 67% · US 70%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
School pathway
Feeds from
Based on grade levels within Derby School District. Attendance zones can vary; confirm enrollment with the district.
Schools most like Derby High School
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Derby High School this school | 360 | 53.6% | N/A |
| Ansonia High School Ansonia | 617 | 59.3% | N/A |
| Sound School New Haven | 332 | 54.2% | N/A |
| Bristol Arts and Innovation Magnet School Bristol | 268 | 54.5% | N/A |
| Connecticut River Academy at Goodwin University East Hartford | 742 | 57.0% | N/A |
| Platt Technical High School Milford | 749 | 47.1% | N/A |
Matched among Connecticut high schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.
Where Derby High School ranks
Among high schools| Measure | This school | In Connecticut | In Naugatuck Valley Planning Region |
|---|---|---|---|
| Enrollment ranked largest first | 360 | #158 of 201 | #21 of 24 |
| Students per teacher ranked fewest first | 9.7:1 | #27 of 188 | #1 of 24 |
| Diversity index ranked most diverse first | 68.5% | #13 of 188 | #1 of 24 |
| Free and reduced lunch ranked highest share first | 53.6% | #68 of 196 | #10 of 24 |
| Enrollment change since 2017-18 ranked fastest growth first | +2.0% | #54 of 63 | #9 of 9 |
Ranked against other public high schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.
4-year change
SY 2020-21 vs SY 2024-25Enrollment
360
+27 (+8%) vs 2020
+7% since 1990-91, when it was 336
Student : Teacher
9.7:1
was 11.1:1
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 360 | 37 | 9.7:1 | 54% (193) |
| 2023-24 | 370 | 36 | 10.3:1 | 56% (209) |
| 2022-23 | 369 | 38 | 9.7:1 | 51% (189) |
| 2020-21 | 333 | 30 | 11.1:1 | 59% (196) |
| 2017-18 | 353 | 33.5 | 10.5:1 | 59% (210) |
| 2015-16 | 344 | 28 | 12.3:1 | 65% (223) |
| 2010-11 | 385 | 30 | 12.8:1 | 51% (196) |
| 2000-01 | 651 | 41 | 15.9:1 | N/A |
| 1990-91 | 336 | 30 | 11.2:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Derby High School.
Since 2017-18: students up 2% (353 to 360); teachers up 10% (33.5 to 37).
About Derby High School
In Derby, Connecticut, Derby High School is a low-enrollment high school. There are 360 students enrolled, covering grades 9 through 12. That puts enrollment 54% below the 788-student average for high schools in Connecticut.
A total of 5 schools make up Derby School District, with 1,289 students enrolled.
No group is above 50% at Derby High School; the largest is Hispanic, at 45%. The school is also 24% White, 23% Black, 6% multiracial, and 3% Asian. The Hispanic share of the county population is lower, at 20%. The diversity index for Derby High School is 68%. For US public schools as a whole it is 70%.
The student-to-teacher ratio is 9.7:1. The school has 37 full-time-equivalent teachers. The gap from the 12.3:1 average for high schools in Connecticut is 2.6 students per teacher. In all, 54% of students qualify for free or reduced-price lunch. The figure for public schools in Naugatuck Valley Planning Region is close, at 52%.
In the wider Naugatuck Valley Planning Region area, the median household earns about $86,191 a year, a bachelor's degree or higher is held by about 34% of adults, and the share of residents below the poverty line is 9%. Derby High School shares Naugatuck Valley Planning Region with 120 other public schools.
Measured in a straight line, Derby Middle School is less than a tenth of a mile from Derby High School. The five-mile area around Derby High School holds at least 8 other public schools.
Derby High School is coded as Suburb: Large in federal locale data.
By 2024-25, enrollment had risen to 360, from 333 in 2020-21. Its ratio of students to teachers was 11.1:1 in 2020-21, and 9.7:1 in 2024-25.
People who know Derby High School can post here about open houses, carpools, and field trips. Teachers and staff are welcome to share updates too.
Naugatuck Valley Planning Region at a glance
View full county profilePopulation
454,969
Census ACS
Median income
$86,191
Household, ACS
Bachelor's+
34%
Adults 25+
Poverty rate
9%
Below federal line
Schools in county
121
59,861 students
Quick facts
Related schools
Other schools in Derby School District
- Irving SchoolElementary · 322 students
- Derby Middle SchoolMiddle · 300 students
- Bradley SchoolElementary · 244 students
- Little Raiders UniversityElementary · 63 students
Other schools in Derby
- Irving SchoolElementary · 322 students
- Derby Middle SchoolMiddle · 300 students
- Bradley SchoolElementary · 244 students
- Little Raiders UniversityElementary · 63 students
Other Derby High schools
One other US public school is named Derby High. Derby High School is the 2nd largest of the 2.
- Derby High SchoolDerby, KS · 2,172 students
Nearby schools
- Derby Middle School0.1 mi · 300
- Little Raiders University0.1 mi · 63
- Irving School0.7 mi · 322
- Ansonia Middle School0.9 mi · 560
- Shelton High School1.4 mi · 1,308
- Perry Hill Elementary School1.6 mi · 711
Frequently asked questions
About Derby High SchoolHow large is Derby High School?
Derby High School enrolls approximately 360 students in grades 09-12.
What age range does Derby High School serve?
Derby High School serves students from grade 09 through grade 12.
What is the student-teacher ratio at Derby High School?
The student-to-teacher ratio at Derby High School is approximately 9.7:1 (37 FTE teachers).
What is the student diversity at Derby High School?
Student demographics at Derby High School are roughly 24% White, 45% Hispanic, 23% Black, 3% Asian, 6% Two or more.
What district is Derby High School in?
Derby High School is part of Derby School District.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.