Private School Review - Established 2003

Denison Private Schools

For the 2026-27 school year, there are 2 private schools serving 256 students in Denison, IA, 10% of all K-12 students in Denison, IA are educated in private schools versus public schools (compared to the IA state average of 10%).
100% of private schools in Denison, IA are religiously affiliated (most commonly Catholic and Lutheran Church Missouri Synod).

Quick Facts (26-27)

Quick Facts (26-27)

Top Ranked Denison Private Schools (2026-27)

Map of Zion Lutheran School
Zion Lutheran School
Gr: PK-8 | 127 students
Avg. class size: 12 students
Sports: 5 | Extracurriculars: 2
Lutheran Church Missouri Synod
1004 1st Ave S
Denison, IA 51442
(712) 263-4766
View Profile
Map of St. Rose Of Lima School
St. Rose Of Lima School
Gr: PK-5 | 129 students
Catholic
1012 2nd Ave S
Denison, IA 51442
(712) 263-5408
View Profile

Denison, IA Private School Trends (10-Year)

2
Private Schools
256
Students
+14.3% (+32 students) 10-yr
12
Avg. Class Size
52%
Students of Color
+92.6% (+25.0 pp) 10-yr
17:1
Student-Teacher Ratio
+13.3% (+2.0) 10-yr
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Enrollment & Diversity
Category
This Town (Denison)
This State (IA)
# Schools
2 Schools
259 Schools
# Students
256 Students
52,730 Students

Trends in the Average Number of Students Per Private School

YearDenison, IA AvgIowa (IA)National
2025128217179
2024128212172
2023112192174
202298203185
202198201180
202098196171
2019108199175
2018108197172
2017108195180
2016108194178
2015112188167
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% Students of Color
52%
16%

Percentage of Students of Color Trends (2015-2025)

YearDenison, IA AvgIowa (IA)National
202552%16%34%
202452%16%34%
202359%17%33%
202229%15%33%
202129%16%32%
202029%15%32%
201926%14%31%
201826%15%31%
201726%13%32%
201626%13%32%
201527%12%32%
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0.68
0.48

Diversity Score Trends

YearDenison, IA AvgIowa (IA)National
20250.680.470.65
20240.680.470.65
20230.710.500.65
20220.630.470.64
20210.630.470.64
20200.630.470.64
20190.590.460.63
20180.590.450.63
20170.590.390.61
20160.590.390.61
20150.600.390.61
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Show more data/charts: racial breakdown
# American Indian Students
n/a
116 Students
% American Indian Students
n/a
n/a
# Asian Students
n/a
1,075 Students
% Asian Students
n/a
2%
# Hispanic Students
91 Students
3,392 Students
% Hispanic Students
35%
7%

Hispanic Student Percentage Trends

YearDenison, IA AvgIowa (IA)National
202536%6%9%
202436%7%9%
202336%6%9%
202214%6%8%
202114%6%9%
202014%6%9%
201918%5%8%
201818%5%8%
201718%4%8%
201618%4%8%
201517%4%8%
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# Black Students
5 Students
1,537 Students
% Black Students
2%
3%

Black Student Percentage Trends

YearDenison, IA AvgIowa (IA)National
20252%3%7%
20242%3%7%
20236%3%8%
20225%3%7%
20215%3%7%
20205%3%8%
20191%3%7%
20181%3%7%
20171%2%7%
20161%2%7%
20151%2%8%
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# White Students
79 Students
36,965 Students
% White Students
31%
70%

White Student Percentage Trends

YearDenison, IA AvgIowa (IA)National
202531%70%52%
202431%71%52%
202328%68%52%
202251%71%54%
202151%70%54%
202051%71%54%
201956%72%56%
201856%72%56%
201756%77%58%
201656%76%58%
201554%76%58%
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# Hawaiian Students
n/a
98 Students
% Hawaiian Students
n/a
n/a
# Two or more races Students
n/a
n/a
% of Two or more races Students
n/a
n/a
# Others Students
81 Students
9,674 Students
% of Others Students
32%
18%

Other Races Student Percentage Trends

YearDenison, IA AvgIowa (IA)National
202531%18%26%
202431%17%26%
202330%20%25%
202230%18%25%
202130%18%25%
202030%18%24%
201925%18%24%
201825%18%23%
201725%15%22%
201625%16%22%
201528%16%21%
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All Ethnic Groups
Academics
# Teachers
15 Teachers
4,273 Teachers
Average Student-Teacher Ratio
17:1
12:1

Student-Teacher Ratio Trends (2015-2025)

YearDenison, IA AvgIowa (IA)National
202517:112:111:1
202417:112:111:1
202316:113:111:1
202214:113:111:1
202114:113:111:1
202014:113:112:1
201914:114:112:1
201814:114:112:1
201714:113:112:1
201614:113:112:1
201515:113:112:1
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Average Class Size
12 students
16 students

Class Size Trends (2017-2025)

YearDenison, IA AvgIowa (IA)National
2025121615
2024121615
2023121515
2022121615
2021121615
2020121615
2019121615
2018121615
2017121515
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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.

Tuition & Aid
Admissions & Athletics
Average Number of Extracurriculars
2 extracurriculars
6 extracurriculars
Average Number of Sports
5 sports
7 sports

Frequently Asked Questions

What are the top ranked private schools in Denison, IA?
The top ranked private schools in Denison, IA is Zion Lutheran School.
How many private schools are located in Denison?
2 private schools are located in Denison.
What percentage of students in Denison go to private school?
10% of all K-12 students in Denison are educated in private schools (compared to the IA state average of 10%).
What percentage of private schools are religiously affiliated in Denison?
100% of private schools in Denison are religiously affiliated (most commonly Catholic and Lutheran Church Missouri Synod).

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