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Public School Review - Established 2003

William O Schaefer Elementary School

140 Lester Dr
Tappan, NY 10983
(School attendance zone shown in map)
View full size Get directions
Tel: (845) 680-1303
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William O Schaefer Elementary School serves 559 students in grades Prekindergarten-2. 
The student-teacher ratio of 11:1 is equal to the New York state level of 11:1.
Minority enrollment is 41% of the student body (majority Hispanic), which is lower than the New York state average of 61% (majority Hispanic).

Quick Facts (2026)

  • Grades: Prekindergarten-2
  • Enrollment: 559 students
  • Student-Teacher Ratio: 11:1
  • Minority Enrollment: 41%
  • Source: National Center for Education Statistics (NCES), NY Dept. of Education

School Overview

William O Schaefer Elementary School's student population of 559 students has stayed relatively flat over five school years.
The teacher population of 51 teachers has stayed relatively flat over five school years.
Grades Offered
Grades Prekindergarten-2
(Supplemental Virtual)

Distribution of Students By Grade Trends

GradeWilliam O Schaefer Elementary School
Pre-K18
Kind179
1172
2190
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Total Students
559 students

Total Students Trends Over Years (1989-2025)

YearWilliam O Schaefer Elementary School
2025559
2024579
2023576
2022576
2021577
2020606
2019582
2018565
2017565
2016578
2015596
2014402
2013416
2012427
2011520
2010524
2009541
2008489
2007511
2006498
2005537
2004534
2003528
2002505
2001452
2000443
1999450
1998452
1997423
1996387
1995375
1994416
1993385
1992359
1991375
1990366
1989343
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Total Classroom Teachers
51 teachers

Total Classroom Teachers Trends Over Years (1988-2025)

YearWilliam O Schaefer Elementary School
202551
202452
202352
202252
202152
202042
201944
201845
201745
201642
201542
201433
201334
201237
201149
201043
200939
200838
200742
200640
200540
200337
200234
200132
200030
199929
199829
199727
199626
199525
199426
199322
199220
199121
199018
198926
198848
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Last Day of School
Tue. Jun 30, 2026

School Rankings

The diversity score of William O Schaefer Elementary School is 0.59, which is less than the diversity score at state average of 0.73. The school's diversity has stayed relatively flat over five school years.
Definition of Terms
This School
State Level (NY)
Student-Teacher Ratio
11:1
11:1

Student-Teacher Ratio Comparison Over Years (1988-2025)

YearWilliam O Schaefer Elementary SchoolNew YorkSouth Orangetown Central School District
202511:111:1
202411:112:110:1
202311:112:110:1
202211:112:111:1
202111:112:111:1
202014:113:113:1
201913:113:113:1
201813:114:113:1
201713:114:113:1
201614:114:113:1
201514:114:113:1
201412:114:113:1
201312:114:113:1
201212:114:114:1
201111:113:113:1
201012:113:113:1
200914:113:113:1
200813:113:113:1
200712:114:113:1
200612:114:113:1
200513:114:114:1
200314:113:114:1
200215:114:114:1
200114:114:113:1
200015:114:113:1
199916:114:114:1
199816:114:114:1
199716:115:114:1
199615:115:114:1
199515:115:113:1
199416:115:114:1
199318:115:115:1
199218:114:115:1
199118:113:113:1
199020:113:113:1
198913:113:112:1
198818:114:113:1
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American Indian
n/a
1%
Asian
8%
10%

Asian Student Percentage Comparison Over Years (1993-2024)

YearWilliam O Schaefer Elementary SchoolNew YorkSouth Orangetown Central School District
20247%10%11%
20237%10%10%
20228%10%10%
20219%10%10%
20198%9%9%
20187%9%9%
20177%9%9%
20167%9%9%
20157%9%8%
20147%9%9%
20139%9%10%
20129%9%10%
20116%8%11%
20107%8%11%
200911%9%12%
200810%8%12%
20079%8%11%
20068%7%12%
20057%7%12%
20048%7%12%
200310%6%13%
200211%6%12%
200110%7%14%
200011%6%14%
199913%6%15%
199812%5%15%
199710%5%15%
199610%5%16%
199515%5%17%
199417%5%17%
199316%5%17%
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Hispanic
24%
31%

Hispanic Student Percentage Comparison Over Years (1993-2024)

YearWilliam O Schaefer Elementary SchoolNew YorkSouth Orangetown Central School District
202426%30%24%
202323%29%22%
202222%29%20%
202121%28%18%
201921%27%17%
201819%26%16%
201719%26%16%
201618%26%14%
201515%25%12%
201414%25%11%
201313%24%10%
201211%23%10%
201112%22%9%
201011%22%9%
20098%21%7%
20089%21%7%
20078%21%7%
200610%20%7%
200511%20%7%
20049%19%7%
20036%19%6%
20028%19%7%
20017%18%6%
20005%18%5%
19996%18%6%
19984%18%5%
19974%18%5%
19964%17%6%
19955%17%5%
19946%17%6%
19935%16%6%
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Black
1%
15%

Black Student Percentage Comparison Over Years (1993-2024)

YearWilliam O Schaefer Elementary SchoolNew YorkSouth Orangetown Central School District
20241%16%2%
20232%16%3%
20222%16%3%
20212%17%3%
20191%17%3%
20182%17%2%
20172%17%2%
20161%18%1%
20151%18%1%
20141%18%2%
20131%18%2%
20121%18%2%
20112%19%2%
20104%19%3%
20093%19%2%
20082%20%2%
20072%19%2%
20062%20%2%
20052%20%3%
20043%20%3%
20031%20%3%
20022%20%3%
20011%20%3%
20001%21%3%
19993%21%3%
19983%20%3%
19973%20%3%
19961%20%2%
19951%20%2%
19942%20%2%
19932%20%2%
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White
59%
39%

White Student Percentage Comparison Over Years (1993-2024)

YearWilliam O Schaefer Elementary SchoolNew YorkSouth Orangetown Central School District
202460%40%57%
202362%40%59%
202261%41%61%
202161%41%63%
201964%43%66%
201867%44%70%
201767%44%70%
201669%44%74%
201572%45%77%
201474%46%77%
201371%47%77%
201275%48%78%
201177%49%77%
201078%51%77%
200978%51%79%
200879%51%79%
200781%52%80%
200680%53%79%
200580%53%78%
200480%54%78%
200383%55%78%
200279%55%78%
200182%55%77%
200083%55%78%
199978%55%76%
199881%57%77%
199783%57%77%
199685%58%76%
199579%58%76%
199475%58%75%
199377%59%75%
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Hawaiian
n/a
n/a
Two or more races
8%
4%

Two or More Races Student Percentage Comparison Over Years (2013-2024)

YearWilliam O Schaefer Elementary SchoolNew YorkSouth Orangetown Central School District
20246%3%6%
20236%4%6%
20227%3%6%
20217%3%6%
20196%3%5%
20185%2%3%
20175%2%3%
20165%2%2%
20155%2%2%
20144%1%1%
20136%1%1%
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All Ethnic Groups
0.59
0.73

Diversity Score Comparison Over Years (1992-2025)

YearWilliam O Schaefer Elementary SchoolNew YorkSouth Orangetown Central School District
20250.590.72
20240.570.720.56
20230.560.730.55
20220.570.720.53
20210.580.720.51
20190.540.710.49
20180.510.710.44
20170.510.710.44
20160.490.700.43
20150.460.700.40
20140.430.690.38
20130.470.690.39
20120.420.680.38
20110.400.680.39
20100.390.660.37
20090.380.660.36
20080.360.660.35
20070.330.650.35
20060.350.640.35
20050.350.640.37
20040.350.630.37
20030.300.620.37
20020.360.620.38
20010.320.630.38
20000.300.620.38
19990.370.620.41
19980.330.610.39
19970.300.610.39
19960.270.600.39
19950.350.600.40
19940.410.600.41
19930.380.590.40
19920.330.580.38
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Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
15%
55%

Free Lunch Eligibility Comparison Over Years (1994-2025)

YearWilliam O Schaefer Elementary SchoolNew YorkSouth Orangetown Central School District
202515%55%
202417%54%18%
202316%53%17%
20227%51%13%
202113%52%13%
202011%50%12%
201910%50%12%
201813%48%12%
201713%48%12%
201612%44%11%
201510%45%8%
20148%42%7%
20139%41%6%
20127%42%6%
20116%41%5%
20105%16%5%
20094%37%4%
20084%36%3%
20075%36%4%
20063%37%4%
20053%14%3%
20034%13%5%
20022%36%3%
20014%36%5%
20003%37%6%
19993%38%4%
19983%37%5%
19973%38%4%
19963%13%3%
19956%13%8%
19946%12%5%
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Eligible for Reduced Lunch
1%
2%

Reduced-Price Lunch Eligibility Comparison Over Years (2002-2025)

YearWilliam O Schaefer Elementary SchoolNew YorkSouth Orangetown Central School District
20251%2%
20241%3%2%
20231%3%2%
20221%3%1%
20211%3%1%
20193%4%3%
20182%5%1%
20172%5%1%
20161%5%1%
20151%6%2%
20142%5%2%
20133%7%2%
20122%7%2%
20111%7%2%
20102%5%2%
20091%8%2%
20081%8%2%
20072%8%2%
20051%5%1%
20032%4%3%
20021%7%2%
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School Statewide Testing
View Education Department Test Scores
School District Name
South Orangetown Central School District
Source: National Center for Education Statistics (NCES), NY Dept. of Education
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Frequently Asked Questions

How many students attend William O Schaefer Elementary School?
559 students attend William O Schaefer Elementary School.
What is the racial composition of the student body?
59% of William O Schaefer Elementary School students are White, 24% of students are Hispanic, 8% of students are Asian, 8% of students are Two or more races, and 1% of students are Black.
What is the student-teacher ratio of William O Schaefer Elementary School?
William O Schaefer Elementary School has a student ration of 11:1, which is equal to the New York state average of 11:1.
What grades does William O Schaefer Elementary School offer ?
William O Schaefer Elementary School offers enrollment in grades Prekindergarten-2 (Supplemental Virtual).
What school district is William O Schaefer Elementary School part of?
William O Schaefer Elementary School is part of South Orangetown Central School District.

School Reviews

Review William O Schaefer Elementary School. Reviews should be a few sentences in length. Please include any comments on:

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Quick Facts (2026)

  • Grades: Prekindergarten-2
  • Enrollment: 559 students
  • Student-Teacher Ratio: 11:1
  • Minority Enrollment: 41%
  • Source: National Center for Education Statistics (NCES), NY Dept. of Education

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