Private School Review - Established 2003

Watertown Private Schools (2026)

For the 2026 school year, there are 5 private schools serving 585 students in Watertown, SD, 13% of all K-12 students in Watertown, SD are educated in private schools versus public schools (compared to the SD state average of 9%).
100% of private schools in Watertown, SD are religiously affiliated (most commonly Wisconsin Evangelical Lutheran Synod and Catholic).

Quick Facts (2026)

Quick Facts (2026)

Top Ranked Watertown Private Schools (2026)

Map of Imaculate Conception
Imaculate Conception
Gr: PK-6 | 158 students
Catholic
109 3rd St Se
Watertown, SD 57201
(605) 886-3883
View Profile
Map of Great Plains Lutheran High School
Great Plains Lutheran High School
Gr: 9-12 | 133 students
Wisconsin Evangelical Lutheran Synod
1200 Luther Ln NE
Watertown, SD 57201
(605) 886-0672
View Profile
Map of St. Martins Lutheran School
St. Martins Lutheran School
Gr: PK-8 | 227 students
Avg. class size: 19 students
Sports: 5 | Extracurriculars: 1
Wisconsin Evangelical Lutheran Synod
1200 2nd St Ne
Watertown, SD 57201
(605) 886-4976
View Profile
Map of Trinity Lutheran School
Trinity Lutheran School
Gr: 2-8 | 7 students
Other Lutheran
1800 E Kemp Ste 2
Watertown, SD 57201
(605) 882-3224
View Profile
Map of Watertown Christian School
Watertown Christian School
Gr: K-8 | 60 students
Christian
15 12th Avenue Ne
Watertown, SD 57201
(605) 882-0949
View Profile

Watertown, SD Private School Trends (10-Year)

5
Private Schools
-16.7% (-1 school) 10-yr
585
Students
+3.5% (+20 students) 10-yr
$2,415
Avg. Tuition
19
Avg. Class Size
5%
Students of Color
+25.0% (+1.0 pp) 10-yr
11:1
Student-Teacher Ratio
Download town snapshot: CSV | XML | JSON Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission.
Enrollment & Diversity
Category
This Town (Watertown)
This State (SD)
# Schools
5 Schools
91 Schools

Trends in Total Number of Private Schools

YearWatertown, SD Total Schools
20255
20245
20235
20225
20215
20206
20196
20186
20176
20166
20156
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Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

# Students
585 Students
14,978 Students

Trends in the Average Number of Students Per Private School

YearWatertown, SD AvgSouth Dakota (SD)National
2025117166179
202495163172
2023105157174
2022116167185
2021116162180
202097153171
2019108160175
2018108157172
201794154180
201694153178
201594148167
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% Students of Color
5%
22%

Percentage of Students of Color Trends (2015-2025)

YearWatertown, SD AvgSouth Dakota (SD)National
20255%21%34%
20246%21%34%
20235%19%33%
20224%22%33%
20214%23%32%
20204%23%32%
20195%21%31%
20185%21%31%
20174%21%32%
20164%21%32%
20154%32%32%
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0.38
0.59

Diversity Score Trends

YearWatertown, SD AvgSouth Dakota (SD)National
20250.380.590.65
20240.130.580.65
20230.250.550.65
20220.390.610.64
20210.390.610.64
20200.390.610.64
20190.360.580.63
20180.360.580.63
20170.350.560.61
20160.350.570.61
20150.350.560.61
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▼ Show more data/charts: racial breakdown
# American Indian Students
n/a
1,727 Students
% American Indian Students
n/a
11%
# Asian Students
4 Students
161 Students
% Asian Students
1%
1%

Asian Student Percentage Trends

YearWatertown, SD AvgSouth Dakota (SD)National
20251%1%5%
20242%1%5%
20231%1%5%
20222%2%4%
20212%2%4%
20202%2%4%
20192%2%4%
20182%2%4%
20172%1%4%
20162%1%4%
20152%1%4%
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# Hispanic Students
11 Students
468 Students
% Hispanic Students
2%
3%

Hispanic Student Percentage Trends

YearWatertown, SD AvgSouth Dakota (SD)National
20252%3%9%
20242%3%9%
20232%2%9%
20221%2%8%
20211%2%9%
20201%2%9%
20191%2%8%
20181%2%8%
20171%2%8%
20161%2%8%
20151%2%8%
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# Black Students
11 Students
244 Students
% Black Students
2%
2%

Black Student Percentage Trends

YearWatertown, SD AvgSouth Dakota (SD)National
20252%2%7%
20242%2%7%
20232%2%8%
20221%2%7%
20211%2%7%
20201%2%8%
20191%2%7%
20181%2%7%
20171%1%7%
20161%1%7%
20151%1%8%
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# White Students
448 Students
8,987 Students
% White Students
76%
59%

White Student Percentage Trends

YearWatertown, SD AvgSouth Dakota (SD)National
202577%59%52%
202493%60%52%
202386%63%52%
202276%55%54%
202176%56%54%
202076%56%54%
201978%59%56%
201878%60%56%
201779%61%58%
201679%61%58%
201579%62%58%
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# Hawaiian Students
n/a
99 Students
% Hawaiian Students
n/a
1%
# Two or more races Students
n/a
n/a
% of Two or more races Students
n/a
n/a
# Others Students
111 Students
3,562 Students
% of Others Students
19%
23%

Other Races Student Percentage Trends

YearWatertown, SD AvgSouth Dakota (SD)National
202518%23%26%
20241%21%26%
20239%21%25%
202220%26%25%
202120%24%25%
202020%25%24%
201918%23%24%
201818%22%23%
201717%22%22%
201617%21%22%
201517%20%21%
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All Ethnic Groups
Academics
# Teachers
51 Teachers
1,225 Teachers
Average Student-Teacher Ratio
11:1
12:1

Student-Teacher Ratio Trends (2015-2025)

YearWatertown, SD AvgSouth Dakota (SD)National
202511:112:111:1
20249:112:111:1
202312:113:111:1
202212:112:111:1
202112:112:111:1
202012:112:112:1
201912:112:112:1
201812:112:112:1
201711:112:112:1
201611:112:112:1
201511:112:112:1
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Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

% Average Faculty w/Advanced Degree
30%
35%
Average Class Size
19 students
15 students
Tuition & Aid
Average Yearly Tuition Cost
$2,415
$6,448
Admissions & Athletics
Average Number of Extracurriculars
1 extracurriculars
8 extracurriculars
Average Number of Sports
5 sports
7 sports

Frequently Asked Questions

What are the top ranked private schools in Watertown, SD?
The top ranked private schools in Watertown, SD is Imaculate Conception.
How many private schools are located in Watertown?
5 private schools are located in Watertown.
How diverse are private schools in Watertown?
Watertown private schools are approximately 5% minority students, which is lower than the South Dakota private school average of 22%.
What percentage of students in Watertown go to private school?
13% of all K-12 students in Watertown are educated in private schools (compared to the SD state average of 9%).
What percentage of private schools are religiously affiliated in Watertown?
100% of private schools in Watertown are religiously affiliated (most commonly Wisconsin Evangelical Lutheran Synod and Catholic).
Which private schools in Watertown are often viewed compared to one another?

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