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SCHOOL COMMUNITY·RIVER DELL REGIONAL SCHOOL DISTRICT·NCES 341226000786

River Dell Regional High School

55 PYLE STREET, ORADELL, NJ 07649 · (201) 599-7240 · Bergen County
GRADES 09–12HIGH21-SUBURBREGULAR SCHOOL1,025 STUDENTS
A
allk12 Grade
Scored higher than 89% of New Jersey public high schools
  • ATest scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
  • A-Beats expectations How far test scores land above or below what the share of low-income students predicts for a school in this state.
  • ·Three-year trend Not available for this school, so the grade uses the other parts.

Grades compare a school only with schools in the same state, because every state gives its own test. How grades work · Top-graded New Jersey public high schools

Enrollment
1,025
High
DISTRICT 799 · STATE 929
Student : Teacher
11.8:1
87 FTE teachers
DISTRICT 11.8:1 · STATE 12.7:1
Free / Reduced Lunch
2%
22 students
DISTRICT 1% · STATE 41%
Community
1
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

GradeStudentsShare
Grade 924324%
Grade 1028828%
Grade 1125425%
Grade 1224023%
Student demographics
60%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 61% · STATE 71% · US 70%
White
55955%
DISTRICT 54% · STATE 37% · US 43%
Hispanic
11411%
DISTRICT 12% · STATE 35% · US 30%
Black
151%
DISTRICT 2% · STATE 14% · US 15%
Asian
30630%
DISTRICT 30% · STATE 10% · US 6%
Two+
313%
DISTRICT 3% · STATE 3% · US 5%
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
Male
49748%
Female
52852%

School pathway

Feeds from
River Dell Middle School07–08
Based on grade levels within River Dell Regional School District. Attendance zones can vary; confirm enrollment with the district.

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Test scores

NJSLA 2024-25 . % Meeting or Exceeding Expectations
English Language Arts
81.7%
NJ avg 53.1% . -2.4pp since 2023
Math
70.8%
NJ avg 41.6% . -5.3pp since 2023

What this means: On the NJSLA, New Jersey's statewide test, about 82 of every 100 students at this school read and write at grade level and about 71 of 100 do math at grade level. Across all New Jersey schools, those numbers are about 53 and 42. Reading and writing scores are down about 2 points since 2023, while math scores are down about 5 points.

NJSLA results by year

School yearEnglish Language ArtsMath
2024-2581.7%70.8%
2023-2484.1%76.1%
% 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 · methodology
Tier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
70.7%
composite math + reading, all grades
Predicted
65.0%
based on NJ schools with similar FRL share
Beats by
+5.7pp
above demographic expectation

What this means: About 71% of students here test proficient in math and reading, compared with the roughly 65% 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 River Dell Regional High School

River Dell Regional High School's state test result (70.7% proficient) is higher than 3 of the 5 schools below with a result.

SchoolStudentsLow-incomeProficient
River Dell Regional High School this school1,0252.1%70.7%
Northern Valley Regional High School at Demarest
Demarest
1,0381.3%78.7%
Tenafly High School
TENAFLY
1,1413.1%74.3%
Northern Valley Regional High School at Old Tappan
Old Tappan
1,0861.3%67.4%
Montville Township High School
MONTVILLE
1,0354.3%65.2%
Ridge High School
Basking Ridge
1,5772.3%68.2%
Matched among New Jersey 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 River Dell Regional High School ranks

Among high schools
MeasureThis schoolIn New JerseyIn Bergen County
State test proficiency
ranked highest first
70.7%#35 of 397#7 of 48
Math proficiency
ranked highest first
70.8%#33 of 400
▼ 6
#9 of 48
▼ 2
Reading proficiency
ranked highest first
81.7%#36 of 395
▲ 15
#6 of 48
▲ 4
Enrollment
ranked largest first
1,025#173 of 442#18 of 51
Students per teacher
ranked fewest first
11.8:1#169 of 388#26 of 49
Diversity index
ranked most diverse first
60.0%#138 of 389#22 of 49
Free and reduced lunch
ranked highest share first
2.1%#386 of 405#42 of 49
Enrollment change since 2017-18
ranked steepest decline first
-2.0%#177 of 200#27 of 31
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 2024-25
Enrollment
1,025
+9 (+1%) vs 2020
+95% since 1990-91, when it was 525
Student : Teacher
11.8:1
was 11.6:1
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-251,02586.811.8:12% (22)
2023-249928911.2:12% (15)
2022-2398289.611.0:12% (15)
2020-211,0168811.6:11% (10)
2017-181,0468911.8:11% (6)
2015-161,0678912.0:11% (12)
2010-111,0366515.9:11% (14)
2000-018445814.6:11% (5)
1990-915253315.9:1N/A
Source: NCES Common Core of Data. Rows are the federal collections on file for River Dell Regional High School.

Since 2017-18: students down 2% (1,046 to 1,025); teachers down 2% (89 to 86.8).

About River Dell Regional High School

A medium-sized high school in ORADELL, New Jersey, River Dell Regional High School is part of River Dell Regional School District. Its 1,025 students are spread across grades 9 through 12.

River Dell Regional School District counts 2 schools and 1,598 students, including River Dell Regional High School.

At 55%, White students outnumber all other groups at River Dell Regional High School combined. Smaller groups are 30% Asian, 11% Hispanic, and 3% multiracial. The county population is about 55% White, within a few points of the school. The chance that two students picked at random at River Dell Regional High School belong to different racial or ethnic groups, known as the diversity index, is 60%.

Teachers at River Dell Regional High School total 86.8 full-time equivalents, and the ratio is 11.8:1. For comparison, high schools in New Jersey average 12.7:1. Federal records put free or reduced-price lunch eligibility at 2%. Across public schools in Bergen County, the average is 28%.

River Dell Regional High School is graded A by allk12, scoring above 89% of New Jersey public high schools once test results, poverty-adjusted performance, and the recent trend are combined.

River Dell Regional High School's average proficiency rate on state tests of 70.7% is 5.7 points above the 65.0% the model predicts from its lunch-eligibility share.

County data help place the school in context: in Bergen County, median household income is about $124,884, roughly 53% of adults have a four-year degree or more, and the share of residents below the poverty line is 5%. The public schools of Bergen County number 291 and enroll about 133,883.

Of nearby public schools, River Dell Middle School is the closest, at about 0.3 miles. Inside a five-mile radius, there are at least 8 other public schools. Among 8 nearby schools that report test results, River Dell Regional High School ranks 3rd on proficiency.

For locale, NCES codes River Dell Regional High School as Suburb: Large.

Enrollment went from 1,016 in 2020-21 to 1,025 in 2024-25, a change of 9 students.

Parents and students can post about school events, clubs, and volunteer needs at River Dell Regional High School. Alumni can share how the school prepared them.

Bergen County at a glance

View full county profile
Population
962,316
Census ACS
Median income
$124,884
Household, ACS
Bachelor's+
53%
Adults 25+
Poverty rate
5%
Below federal line
Schools in county
291
133,883 students

Quick facts

School name
River Dell Regional High School
District
River Dell Regional School District
Address
55 PYLE STREET, ORADELL, NJ 07649
Phone
(201) 599-7240
County
Bergen County
Level
High
Grade range
09–12
Total enrollment
1,025
Teachers (FTE)
87
Student–teacher ratio
11.8:1
Free and reduced lunch
22 (2%)
Locale
21-Suburb: Large
NCES ID
341226000786
Charter school
No
Virtual school
No

Related schools

Other schools in River Dell Regional School District
Other schools in ORADELL
Nearby schools

Frequently asked questions

About River Dell Regional High School
How large is River Dell Regional High School?
River Dell Regional High School enrolls approximately 1,025 students in grades 09-12.
What grades does River Dell Regional High School serve?
River Dell Regional High School serves grades 09-12.
What is the student-teacher ratio at River Dell Regional High School?
The student-to-teacher ratio at River Dell Regional High School is approximately 11.8:1 (87 FTE teachers).
What is the racial breakdown of students at River Dell Regional High School?
At River Dell Regional High School, the student body is approximately 55% White, 11% Hispanic, 1% Black, 30% Asian, 3% Two or more.
What district is River Dell Regional High School in?
River Dell Regional High School is part of River Dell Regional School District.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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