Enrollment
284
Elementary
DISTRICT 328 · STATE 405
SCHOOL COMMUNITY·HAMILTON TOWNSHIP PUBLIC SCHOOL DISTRICT·NCES 340654003108
Klockner Elementary School
830 KLOCKNER AVENUE, HAMILTON, NJ 08619 · (609) 631-4154 · Mercer County
GRADES PK–05ELEMENTARY21-SUBURBTITLE IREGULAR SCHOOL284 STUDENTS
Student : Teacher
14.1:1
20 FTE teachers
DISTRICT 12.2:1 · STATE 11.4:1
Free / Reduced Lunch
71%
201 students
DISTRICT 54% · STATE 41%
Community
0
0 members
Enrollment and student:teacher ratio compared against other elementary schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Pre-K | 50 | 18% |
| Kindergarten | 42 | 15% |
| Grade 1 | 31 | 11% |
| Grade 2 | 47 | 17% |
| Grade 3 | 43 | 15% |
| Grade 4 | 39 | 14% |
| Grade 5 | 32 | 11% |
This year's kindergarten class (42) is 31% larger than its 5th grade class (32).
Student demographics
67%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 67% · STATE 71% · 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
Test scores
NJSLA 2024-25 . % Meeting or Exceeding ExpectationsEnglish Language Arts
40.4%
NJ avg 53.1% . +9.0pp since 2023
Math
38.1%
NJ avg 41.6% . +12.9pp since 2023
What this means: On the NJSLA, New Jersey's statewide test, about 40 of every 100 students at this school read and write at grade level and about 38 of 100 do math at grade level. Across all New Jersey schools, those numbers are about 53 and 42. Reading and writing scores are up about 9 points since 2023, while math scores are up about 13 points.
NJSLA results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 40.4% | 38.1% |
| 2023-24 | 31.4% | 25.2% |
% Meeting or Exceeding Expectations, all students and all tested grades.
Source: NJSLA. All students, all grades. See all years and grades →
BeatsExpectations
Demographically-adjusted score · methodologyTier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
29.8%
composite math + reading, all grades
Predicted
27.4%
based on NJ schools with similar FRL share
Beats by
+2.4pp
above demographic expectation
What this means: About 30% of students here test proficient in math and reading, compared with the roughly 27% typical for New Jersey schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among New Jersey's top nor bottom 10%.
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →
Schools most like Klockner Elementary School
Klockner Elementary School's state test result (29.8% proficient) is higher than 4 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Klockner Elementary School this school | 284 | 70.8% | 29.8% |
| Charles L. Spragg School EGG HARBOR CITY | 285 | 71.6% | 9.0% |
| Number 6 Linden | 320 | 63.8% | 27.6% |
| Number 10 Linden | 299 | 64.2% | 31.4% |
| Number 8 Linden | 334 | 68.3% | 24.9% |
| Dane Barse Elementary School VINELAND | 245 | 72.7% | 28.0% |
Matched among New Jersey elementary 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 Klockner Elementary School ranks
Among elementary schools| Measure | This school | In New Jersey | In Mercer County |
|---|---|---|---|
| State test proficiency ranked highest first | 29.8% | #963 of 1,290 | #33 of 56 |
| Math proficiency ranked highest first | 38.1% | #838 of 1,319 ▲ 173 | #29 of 56 ▲ 5 |
| Reading proficiency ranked highest first | 40.4% | #924 of 1,319 ▲ 116 | #31 of 56 ▲ 5 |
| Enrollment ranked largest first | 284 | #1,171 of 1,562 | #48 of 60 |
| Students per teacher ranked fewest first | 14.1:1 | #1,237 of 1,390 | #53 of 57 |
| Diversity index ranked most diverse first | 67.5% | #234 of 1,392 | #14 of 57 |
| Free and reduced lunch ranked highest share first | 70.8% | #338 of 1,481 | #23 of 58 |
| Enrollment change since 2017-18 ranked fastest growth first | +8.8% | #285 of 545 | #12 of 22 |
Ranked against other public elementary 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
284
+52 (+22%) vs 2020
-3% since 1990-91, when it was 294
Student : Teacher
14.1:1
was 10.6:1
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 | 284 | 20.2 | 14.1:1 | 71% (201) |
| 2023-24 | 275 | 21.5 | 12.8:1 | 60% (166) |
| 2022-23 | 265 | 23 | 11.6:1 | 49% (131) |
| 2020-21 | 232 | 22 | 10.6:1 | 50% (116) |
| 2017-18 | 261 | 20 | 13.1:1 | 54% (140) |
| 2015-16 | 240 | 21 | 11.4:1 | 55% (131) |
| 2010-11 | 242 | 17 | 14.2:1 | 48% (115) |
| 2000-01 | 319 | 18 | 17.7:1 | 30% (96) |
| 1990-91 | 294 | 17 | 17.3:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Klockner Elementary School.
Since 2017-18: students up 9% (261 to 284); teachers up 1% (20 to 20.2).
About Klockner Elementary School
Klockner Elementary School is an elementary school in HAMILTON, New Jersey, reachable at (609) 631-4154. It has an enrollment of 284 students in pre-K through 5. Across elementary schools in New Jersey, the average enrollment is about 405.
In Hamilton Township Public School District, 23 schools enroll a combined 12,355 students.
About 50% of students at Klockner Elementary School are Hispanic, the largest single group. The rest of enrollment is 19% Black, 18% White, 7% Asian, and 6% multiracial. Among all residents of Mercer County, the Hispanic share is about 23%. Its diversity index, the chance that two randomly chosen students belong to different racial or ethnic groups, is 67%.
There are 20.2 full-time-equivalent teachers at Klockner Elementary School, giving a ratio of 14.1:1. Elementary schools in New Jersey have an average ratio of 11.4:1. By family income, 71% of students are eligible for free or reduced-price lunch. The rate at public schools in Mercer County averages 48%, lower than here.
On the allk12 BeatsExpectations measure, Klockner Elementary School is 2.4 points above the average proficiency rate across its state test results predicted for its free or reduced-price lunch share: 29.8% actual, 27.4% predicted. That is outside both the top and bottom 10% in New Jersey.
In Mercer County, where the school is located, the median household earns about $100,645 a year, 45% of adults hold a bachelor's degree or higher, and about 7% of people live in poverty. Counting Klockner Elementary School, Mercer County has 110 public schools.
Among nearby public schools, Hamilton North - Nottingham is closest at about 0.3 miles. In all, at least 8 other public schools sit within five miles of Klockner Elementary School. Among the 8 closest schools with test data, this one included, Klockner Elementary School ranks 3rd on average proficiency.
NCES describes the area around Klockner Elementary School as Suburb: Large, meaning in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more.
By 2024-25, enrollment had risen to 284, from 232 in 2020-21. The ratio was 10.6:1 in 2020-21 and 14.1:1 in 2024-25.
This community page is for conversations about athletics, class schedules, and weather closures. You can also rate the school on this page.
Mercer County at a glance
View full county profilePopulation
385,864
Census ACS
Median income
$100,645
Household, ACS
Bachelor's+
45%
Adults 25+
Poverty rate
7%
Below federal line
Schools in county
110
58,647 students
Quick facts
Related schools
Other schools in Hamilton Township Public School District
- Hamilton East - SteinertHigh · 1,437 students
- Hamilton West-WatsonHigh · 1,408 students
- Hamilton North - NottinghamHigh · 1,147 students
- Albert E Grice Middle SchoolMiddle · 991 students
- Emily C. Reynolds Middle SchoolMiddle · 966 students
- Richard C Crockett Middle SchoolMiddle · 834 students
Other schools in HAMILTON
- Hamilton East - SteinertHigh · 1,437 students
- Hamilton West-WatsonHigh · 1,408 students
- Hamilton North - NottinghamHigh · 1,147 students
- Albert E Grice Middle SchoolMiddle · 991 students
- Emily C. Reynolds Middle SchoolMiddle · 966 students
- Richard C Crockett Middle SchoolMiddle · 834 students
Nearby schools
- Hamilton North - Nottingham0.3 mi · 1,147
- Greenwood Elementary School0.8 mi · 270
- Mercerville Elementary School1.1 mi · 350
- McCorristin Charter School1.3 mi · 400
- Kuser Elementary School1.3 mi · 512
- Morgan Elementary School1.7 mi · 285
Frequently asked questions
About Klockner Elementary SchoolHow large is Klockner Elementary School?
Klockner Elementary School enrolls approximately 284 students in grades PK-05.
What age range does Klockner Elementary School serve?
Klockner Elementary School serves students from grade PK through grade 05.
What is the student-teacher ratio at Klockner Elementary School?
The student-to-teacher ratio at Klockner Elementary School is approximately 14.1:1 (20 FTE teachers).
What is the student diversity at Klockner Elementary School?
Student demographics at Klockner Elementary School are roughly 18% White, 50% Hispanic, 19% Black, 7% Asian, 6% Two or more.
Who oversees Klockner Elementary School?
Klockner Elementary School is overseen by Hamilton Township Public School District in Mercer County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.