Best High Schools in Suffolk County, NY

Suffolk County, NY has 91 high schools with 91,623 students. Below are the top high schools based on their actual test performance displayed alongside our projected performance for their socioeconomic status and the Teacher Grade we assign based on expected performance. On average, high schools in Suffolk County score 88% on their proficiency tests, and we project and average score of 79% on those same proficiency tests. Comparing the differences, on average, high schools in Suffolk County greatly exceed expectations.

1. Harborfields High School

A+

SchoolGrade

100%

Actual Test Scores

97%

Projected Test Scores

Teacher Grade:Exceeds Expectations

Harborfields Central School District • Public • Grades 9 - 12 • 949 Students

2. Plainview-old Bethpage/jfk High School

A+

SchoolGrade

100%

Actual Test Scores

97%

Projected Test Scores

Teacher Grade:Exceeds Expectations

Plainview-old Bethpage Central School District • Public • Grades 9 - 12 • 1649 Students

3. Half Hollow Hills High School West

A+

SchoolGrade

99%

Actual Test Scores

95%

Projected Test Scores

Teacher Grade:Exceeds Expectations

Half Hollow Hills Central School District • Public • Grades 9 - 12 • 1055 Students

4. Syosset Senior High School

A+

SchoolGrade

98%

Actual Test Scores

97%

Projected Test Scores

Teacher Grade:Meets Expectations

Syosset Central School District • Public • Grades 9 - 12 • 2266 Students

5. Northport Senior High School

A+

SchoolGrade

98%

Actual Test Scores

97%

Projected Test Scores

Teacher Grade:Meets Expectations

Northport-east Northport Union Free School District • Public • Grades 9 - 12 • 1645 Students

6. Smithtown High School-west

A+

SchoolGrade

98%

Actual Test Scores

96%

Projected Test Scores

Teacher Grade:Exceeds Expectations

Smithtown Central School District • Public • Grades 9 - 12 • 1270 Students

7. Kings Park High School

A+

SchoolGrade

98%

Actual Test Scores

97%

Projected Test Scores

Teacher Grade:Meets Expectations

Kings Park Central School District • Public • Grades 9 - 12 • 857 Students

8. Sayville High School

A+

SchoolGrade

98%

Actual Test Scores

97%

Projected Test Scores

Teacher Grade:Meets Expectations

Sayville Union Free School District • Public • Grades 9 - 12 • 880 Students

9. Commack High School

A+

SchoolGrade

98%

Actual Test Scores

96%

Projected Test Scores

Teacher Grade:Meets Expectations

Commack Union Free School District • Public • Grades 9 - 12 • 1861 Students

10. Robert M Grable Jr Mount Sinai High School

A+

SchoolGrade

98%

Actual Test Scores

97%

Projected Test Scores

Teacher Grade:Meets Expectations

Mount Sinai Union Free School District • Public • Grades 9 - 12 • 720 Students

Best Middle Schools in Suffolk County, NY

Suffolk County, NY has 76 middle schools with 55,171 students. Below are the top middle schools based on their actual test performance displayed alongside our projected performance for their socioeconomic status and the Teacher Grade we assign based on expected performance. On average, middle schools in Suffolk County score 56% on their proficiency tests, and we project and average score of 54% on those same proficiency tests. Comparing the differences, on average, middle schools in Suffolk County exceed expectations.

1. Paul J Gelinas Junior High School

A+

SchoolGrade

86%

Actual Test Scores

79%

Projected Test Scores

Teacher Grade:Greatly Exceeds Expectations

Three Village Central School District • Public • Grades 7 - 9 • 647 Students

2. H B Mattlin Middle School

A+

SchoolGrade

85%

Actual Test Scores

78%

Projected Test Scores

Teacher Grade:Greatly Exceeds Expectations

Plainview-old Bethpage Central School District • Public • Grades 5 - 8 • 772 Students

3. Port Jefferson Middle School

A+

SchoolGrade

83%

Actual Test Scores

75%

Projected Test Scores

Teacher Grade:Greatly Exceeds Expectations

Port Jefferson Union Free School District • Public • Grades 6 - 8 • 222 Students

4. Candlewood Middle School

A+

SchoolGrade

78%

Actual Test Scores

67%

Projected Test Scores

Teacher Grade:Greatly Exceeds Expectations

Half Hollow Hills Central School District • Public • Grades 6 - 8 • 719 Students

5. Sayville Middle School

A+

SchoolGrade

78%

Actual Test Scores

63%

Projected Test Scores

Teacher Grade:Greatly Exceeds Expectations

Sayville Union Free School District • Public • Grades 6 - 8 • 619 Students

6. Longwood Junior High School

A+

SchoolGrade

78%

Actual Test Scores

59%

Projected Test Scores

Teacher Grade:Greatly Exceeds Expectations

Longwood Central School District • Public • Grades 7 - 8 • 1388 Students

7. West Hollow Middle School

A+

SchoolGrade

76%

Actual Test Scores

67%

Projected Test Scores

Teacher Grade:Greatly Exceeds Expectations

Half Hollow Hills Central School District • Public • Grades 6 - 8 • 969 Students

8. Robert Cushman Murphy Junior High School

A+

SchoolGrade

75%

Actual Test Scores

69%

Projected Test Scores

Teacher Grade:Exceeds Expectations

Three Village Central School District • Public • Grades 7 - 9 • 667 Students

9. Albert G Prodell Middle School

A+

SchoolGrade

75%

Actual Test Scores

67%

Projected Test Scores

Teacher Grade:Greatly Exceeds Expectations

Shoreham-wading River Central School District • Public • Grades 6 - 8 • 456 Students

10. Oakdale-bohemia Middle School

A+

SchoolGrade

75%

Actual Test Scores

63%

Projected Test Scores

Teacher Grade:Greatly Exceeds Expectations

Connetquot Central School District • Public • Grades 6 - 8 • 634 Students

Best Elementary Schools in Suffolk County, NY

Suffolk County, NY has 234 elementary schools with 98,281 students. Below are the top elementary schools based on their actual test performance displayed alongside our projected performance for their socioeconomic status and the Teacher Grade we assign based on expected performance. On average, elementary schools in Suffolk County score 64% on their proficiency tests, and we project and average score of 60% on those same proficiency tests. Comparing the differences, on average, elementary schools in Suffolk County exceed expectations.

1. Old Bethpage School

A+

SchoolGrade

93%

Actual Test Scores

86%

Projected Test Scores

Teacher Grade:Exceeds Expectations

Plainview-old Bethpage Central School District • Public • Grades KG - 4 • 435 Students

2. Lloyd Harbor School

A+

SchoolGrade

90%

Actual Test Scores

81%

Projected Test Scores

Teacher Grade:Greatly Exceeds Expectations

Cold Spring Harbor Central School District • Public • Grades 2 - 6 • 390 Students

3. Walt Whitman Elementary School

A+

SchoolGrade

90%

Actual Test Scores

87%

Projected Test Scores

Teacher Grade:Exceeds Expectations

Syosset Central School District • Public • Grades KG - 5 • 387 Students

4. Nassakeag Elementary School

A+

SchoolGrade

90%

Actual Test Scores

82%

Projected Test Scores

Teacher Grade:Greatly Exceeds Expectations

Three Village Central School District • Public • Grades Pre K - 6 • 543 Students

5. Vanderbilt Elementary School

A+

SchoolGrade

88%

Actual Test Scores

83%

Projected Test Scores

Teacher Grade:Exceeds Expectations

Half Hollow Hills Central School District • Public • Grades KG - 5 • 703 Students

6. Mills Pond Elementary School

A+

SchoolGrade

88%

Actual Test Scores

81%

Projected Test Scores

Teacher Grade:Exceeds Expectations

Smithtown Central School District • Public • Grades KG - 5 • 372 Students

7. Minnesauke Elementary School

A+

SchoolGrade

88%

Actual Test Scores

79%

Projected Test Scores

Teacher Grade:Greatly Exceeds Expectations

Three Village Central School District • Public • Grades Pre K - 6 • 642 Students

8. Paumanok Elementary School

A+

SchoolGrade

88%

Actual Test Scores

78%

Projected Test Scores

Teacher Grade:Greatly Exceeds Expectations

Half Hollow Hills Central School District • Public • Grades KG - 5 • 574 Students

9. Tackan Elementary School

A+

SchoolGrade

88%

Actual Test Scores

76%

Projected Test Scores

Teacher Grade:Greatly Exceeds Expectations

Smithtown Central School District • Public • Grades KG - 5 • 499 Students

10. Signal Hill Elementary School

A+

SchoolGrade

86%

Actual Test Scores

83%

Projected Test Scores

Teacher Grade:Exceeds Expectations

Half Hollow Hills Central School District • Public • Grades KG - 5 • 643 Students

Education & Community Snapshot in Suffolk County, NY

County-level factors that shape the learning environment around local schools.

Community Factors

Suffolk County, NY has a total population of 1,525,920 with 24% of that population attending schools. The adult high school graduation rate is 90%, and 40% of adults have a bachelor’s degree or higher.

Students in Suffolk County, NY

248,472

K-12 Students

High School Graduates

90%

Adults 25+ with HS diplomas

College Graduates

40%

Adults 25+ with a Bachelor’s degree or higher

Demographics statistics provided by Best Neighborhood Suffolk County, NY.

Safety

Crime Grades summarize reported incidents per 1,000 residents. Use them as neighborhood context, not a school rating.

Overall Crime Grade

A

17.39 per 1,000 Residents

Violent Crime Grade

B

3.01 per 1,000 Residents

Property Crime Grade

B-

14.38 per 1,000 Residents

Crime statistics provided by CrimeGrade in Suffolk County, NY.

Connectivity

Connectivity influences learning at home. We summarize internet infrastructure, typical download speed, and a digital connectivity index for Suffolk County, NY.

ISP Report Card

A-

Internet Infrastructure Grade

Average Download Speed

7,554 Mbps

Speed Most Residents Can Get

Digital Connectivity Index

81 / 100

ISP Connectivity Demand Report

To read more about these statistics, please visit Suffolk County, NY Internet Health Assessment.

Best Schools in Cities Near Suffolk County, NY

Explore nearby cities to widen your school search.

Greater Bridgeport Planning Region, CT

  • Actual Test Scores: 41%
  • Projected Test Scores: 41%
  • Teacher Grade: Meets Expectations
Nassau County, NY

  • Actual Test Scores: 74%
  • Projected Test Scores: 67%
  • Teacher Grade: Greatly Exceeds Expectations
Western Connecticut Planning Region, CT

  • Actual Test Scores: 55%
  • Projected Test Scores: 54%
  • Teacher Grade: Meets Expectations
South Central Connecticut Planning Region, CT

  • Actual Test Scores: 39%
  • Projected Test Scores: 41%
  • Teacher Grade: Meets Expectations
Queens County, NY

  • Actual Test Scores: 66%
  • Projected Test Scores: 54%
  • Teacher Grade: Greatly Exceeds Expectations
Westchester County, NY

  • Actual Test Scores: 69%
  • Projected Test Scores: 61%
  • Teacher Grade: Greatly Exceeds Expectations
Bronx County, NY

  • Actual Test Scores: 51%
  • Projected Test Scores: 44%
  • Teacher Grade: Greatly Exceeds Expectations
New York County, NY

  • Actual Test Scores: 68%
  • Projected Test Scores: 49%
  • Teacher Grade: Greatly Exceeds Expectations
Kings County, NY

  • Actual Test Scores: 58%
  • Projected Test Scores: 53%
  • Teacher Grade: Exceeds Expectations
Bergen County, NJ

  • Actual Test Scores: 41%
  • Projected Test Scores: 43%
  • Teacher Grade: Meets Expectations