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SCHOOL COMMUNITY·MOUNTAIN LAKES PUBLIC SCHOOL DISTRICT·NCES 341101004416

Mountain Lakes High School

96 Powerville Rd., Mountain Lakes, NJ 07046 · (973) 334-8400 · Morris County
GRADES 09–12HIGH21-SUBURBREGULAR SCHOOL546 STUDENTS
A
allk12 Grade
Scored higher than 85% 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
546
High
DISTRICT 324 · STATE 929
Student : Teacher
9.8:1
56 FTE teachers
DISTRICT 7.9:1 · STATE 12.7:1
Free / Reduced Lunch
2%
11 students
DISTRICT 5% · 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 912924%
Grade 1013124%
Grade 1113425%
Grade 1215228%
Student demographics
46%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 51% · STATE 71% · US 70%
White
38871%
DISTRICT 67% · STATE 37% · US 43%
Hispanic
519%
DISTRICT 9% · STATE 35% · US 30%
Black
112%
DISTRICT 2% · STATE 14% · US 15%
Asian
7414%
DISTRICT 16% · STATE 10% · US 6%
Two+
193%
DISTRICT 5% · STATE 3% · US 5%
Native American
10%
DISTRICT 0% · STATE 0% · US 1%
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
30155%
Female
24345%

School pathway

Feeds from
Briarcliff Middle School06–08Lake Drive Program for Hearing ImpairedPK–08
Based on grade levels within Mountain Lakes Public 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
81.2%
NJ avg 53.1% . -10.3pp since 2023
Math
64.8%
NJ avg 41.6% . +7.3pp since 2023

What this means: On the NJSLA, New Jersey's statewide test, about 81 of every 100 students at this school read and write at grade level and about 65 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 10 points since 2023, while math scores are up about 7 points.

NJSLA results by year

School yearEnglish Language ArtsMath
2024-2581.2%64.8%
2023-2491.5%57.5%
% 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
66.9%
composite math + reading, all grades
Predicted
65.1%
based on NJ schools with similar FRL share
Beats by
+1.8pp
above demographic expectation

What this means: About 67% 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 Mountain Lakes High School

Mountain Lakes High School's state test result (66.9% proficient) is higher than 4 of the 5 schools below with a result.

SchoolStudentsLow-incomeProficient
Mountain Lakes High School this school5462.0%66.9%
Whippany Park High School
WHIPPANY
5844.5%59.0%
New Providence High School
NEW PROVIDENCE
6443.1%66.3%
Kinnelon High School
KINNELON
5076.7%58.1%
Hanover Park High School
EAST HANOVER
7062.5%57.5%
Pascack Hills High School
Montvale
7682.0%68.9%
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 Mountain Lakes High School ranks

Among high schools
MeasureThis schoolIn New JerseyIn Morris County
State test proficiency
ranked highest first
66.9%#46 of 397#3 of 23
Math proficiency
ranked highest first
64.8%#45 of 400
▲ 28
#5 of 25
▲ 6
Reading proficiency
ranked highest first
81.2%#38 of 395
▼ 7
#4 of 25
no change
Enrollment
ranked largest first
546#311 of 442#21 of 27
Students per teacher
ranked fewest first
9.8:1#32 of 388#4 of 23
Diversity index
ranked most diverse first
46.2%#262 of 389#14 of 23
Free and reduced lunch
ranked highest share first
2.0%#387 of 405#21 of 23
Enrollment change since 2017-18
ranked steepest decline first
-19.7%#25 of 200#4 of 18
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
546
-95 (-15%) vs 2020
+33% since 1990-91, when it was 412
Student : Teacher
9.8:1
was 10.3:1
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-25546569.8:12% (11)
2023-24550589.5:11% (7)
2022-23569609.5:11% (8)
2020-216416210.3:11% (4)
2017-1868061.911.0:12% (11)
2015-167066111.6:12% (17)
2010-116895712.1:11% (5)
2000-016374813.3:10% (2)
1990-914122715.3:1N/A
Source: NCES Common Core of Data. Rows are the federal collections on file for Mountain Lakes High School.

Since 2017-18: students down 20% (680 to 546); teachers down 10% (61.9 to 56).

About Mountain Lakes High School

Federal records list Mountain Lakes High School as a high school in Mountain Lakes, New Jersey. It serves 546 students in grades 9 through 12. For comparison, high schools in New Jersey average about 929 students.

The 4 schools in Mountain Lakes Public School District enroll 1,296 students altogether, Mountain Lakes High School among them.

Roughly 71% of students at Mountain Lakes High School are White. Other groups make up 14% Asian, 9% Hispanic, 3% multiracial, and 2% Black. The county population is about 68% White, within a few points of the school. The school's diversity index is 46%, meaning two students picked at random have a 46% chance of belonging to different racial or ethnic groups.

Mountain Lakes High School counts 56 full-time-equivalent teachers, about 9.8 students for each one. This ratio sits 3.0 below the 12.7:1 average for high schools in New Jersey. About 2% of students at the school meet free or reduced-price lunch income limits. The average for public schools in Morris County is 19%.

allk12 grades Mountain Lakes High School an A. The grade compares the school only with New Jersey public high schools, because each state gives its own test.

Mountain Lakes High School's average proficiency rate on state tests of 66.9% is 1.8 points above the 65.1% the model predicts from its lunch-eligibility share.

According to the American Community Survey, in Morris County, the median household income is $137,326, roughly 58% of adults have a four-year degree or more, and the share of residents below the poverty line is 3%. There are 156 public schools in Morris County, enrolling about 72,239 students in all.

The closest public school to Mountain Lakes High School is Wildwood Elementary School, about 0.3 miles away. Mountain Lakes High School is one of several public schools in the area, with at least 8 others within five miles. The nearest schools with test data average 64.0%, lower than Mountain Lakes High School's 66.9%.

The school's setting, by NCES definition, is Suburb: Large: in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more.

Federal data show a 15% enrollment decrease, from 641 in 2020-21 to 546 in 2024-25.

Community posts for Mountain Lakes High School can cover school safety, transportation, and start times. Questions from prospective families are welcome too.

Morris County at a glance

View full county profile
Population
514,528
Census ACS
Median income
$137,326
Household, ACS
Bachelor's+
58%
Adults 25+
Poverty rate
3%
Below federal line
Schools in county
156
72,239 students

Quick facts

School name
Mountain Lakes High School
District
Mountain Lakes Public School District
Address
96 Powerville Rd., Mountain Lakes, NJ 07046
Phone
(973) 334-8400
County
Morris County
Level
High
Grade range
09–12
Total enrollment
546
Teachers (FTE)
56
Student–teacher ratio
9.8:1
Free and reduced lunch
11 (2%)
Locale
21-Suburb: Large
NCES ID
341101004416
Charter school
No
Virtual school
No

Related schools

Other schools in Mountain Lakes Public School District
Other schools in Mountain Lakes
Other Mountain Lakes High schools

One other US public school is named Mountain Lakes High. Mountain Lakes High School is the largest of the 2.

Nearby schools

Frequently asked questions

About Mountain Lakes High School
How large is Mountain Lakes High School?
Mountain Lakes High School enrolls approximately 546 students in grades 09-12.
Is Mountain Lakes High School an elementary, middle, or high school?
Mountain Lakes High School is a high school covering grades 09-12.
How many teachers does Mountain Lakes High School have?
Mountain Lakes High School employs 56 FTE teachers, for a student-to-teacher ratio of 9.8:1.
How diverse is Mountain Lakes High School?
Mountain Lakes High School reports a student body of 71% White, 9% Hispanic, 2% Black, 14% Asian, 3% Two or more.
What district is Mountain Lakes High School in?
Mountain Lakes High School is part of Mountain Lakes Public School District.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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