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²ÝÁñÉçÇø School Review - Established 2003
The Prairie School Top 9 · Highest Avg. ACT Score (WI)
St. Lawrence Seminary High School Top 8 · Highest Avg. SAT Score (WI)
Brookfield Academy Top 3 · Highest Avg. SAT Score (WI)

Oldest ²ÝÁñÉçÇø High Schools in Wisconsin

The average private high school in Wisconsin was founded around 1967 (2026-27).
The oldest private high school in Wisconsin is Sainta, founded in 1850.

Quick Facts (2026-27)

  • # WI Schools Ranked: 151
  • Top 20 Range (Year Founded): 1850–1920
  • WI School Avg.: 1967
  • National School Avg.: 1967

Quick Facts (2026-27)

  • # WI Schools Ranked: 151
  • Top 20 Range (Year Founded): 1850–1920
  • WI School Avg.: 1967
  • National School Avg.: 1967
Show school map — Wisconsin (year founded range: 1850–1920, avg 1967)
Year Founded Range: 1850 1952 Avg. Year Founded: 1907

Oldest ²ÝÁñÉçÇø High Schools in Wisconsin (2026-27)

Showing 151 schools
Map of Sainta
#1Sainta
Gr: 2-11 | 32 students
All-boys | Special Education School
8901 W Capitol Dr
Milwaukee, WI 53222
(414) 463-1880
1850year founded
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Wayland Academy Photo
#2Wayland Academy
Gr: 9-12 | 200 students
Sports: 17 | Extracurriculars: 28
101 N University Avenue
Beaver Dam, WI 53916
(920) 885-3373
1855year founded
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Map of Marquette University High School
#3 Marquette University High School
Gr: 9-12 | 928 students
Avg. class size: 24 students
Sports: 24
All-boys (Catholic)
3401 W Wisconsin Ave
Milwaukee, WI 53208
(414) 933-7220
1857year founded
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St. Lawrence Seminary High School Photo
#4St. Lawrence Seminary High School
Gr: 9-12 | 172 students
Avg. class size: 13 students
Sports: 11 | Extracurriculars: 17
All-boys (Catholic)
301 Church Street
Mount Calvary, WI 53057
(920) 753-7570
1860year founded
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Luther Prep Photo
#5(°Õ5–T6)Luther Prep
Gr: 9-12 | 422 students
Avg. class size: 18 students
Sports: 12 | Extracurriculars: 10
Wisconsin Evangelical Lutheran Synod
1300 Western Ave
Watertown, WI 53094
(920) 261-4352
1865year founded
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Map of St. Catherines High School
#5(°Õ5–T6)St. Catherines High School
Gr: 9-12 | 452 students
Avg. class size: 17 students
Sports: 15 | Extracurriculars: 15
Catholic
1200 Park Ave
Racine, WI 53403
(262) 632-2785
(2)
1865year founded
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St. Thomas More High School Photo
#7 St. Thomas More High School
Gr: 9-12 | 566 students
Avg. class size: 18 students
Sports: 16 | Extracurriculars: 23
Catholic
2601 E Morgan Ave
Milwaukee, WI 53207
(414) 481-8370
1870year founded
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Map of Green Bay Adventist Junior Academy
#8(°Õ8–T9)Green Bay Adventist Junior Academy
Gr: K-10 | 36 students
Seventh Day Adventist
1422 Shawano Ave
Green Bay, WI 54303
(920) 494-2741
1876year founded
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Map of St. Thomas Aquinas Academy
#8(°Õ8–T9)St. Thomas Aquinas Academy
Gr: PK-12 | 164 students
Sports: 8
Catholic
1200 Main St
Marinette, WI 54143
(715) 735-7481
(1)
1876year founded
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Edgewood High School Of The Sacred Heart Photo
#10(°Õ10–T11)Edgewood High School Of The Sacred Heart
Gr: 9-12 | 610 students
Avg. class size: 20 students
Sports: 20 | Extracurriculars: 36
2219 Monroe St
Madison, WI 53711
(608) 257-1023
(3)
1881year founded
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Map of Family And Children Centers Alternative Education
#10(°Õ10–T11)Family And Children Centers Alternative Education
Gr: K-12 | 38 students
Special Education School
1707 Main St
La Crosse, WI 54601
(608) 785-0001
1881year founded
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Map of Mcdonell Central Catholic High School
#12Mcdonell Central Catholic High School
Gr: 9-12 | 178 students
Catholic
1316 Bel Air Blvd
Chippewa Falls, WI 54729
(715) 723-0538
1883year founded
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St. John's Northwestern Academy Photo
#13St. John's Northwestern Academy
Gr: 7-12 | 221 students
Avg. class size: 12 students
Sports: 11 | Extracurriculars: 11
Specialized Curriculum (Episcopal)
1101 Genesee Street
Delafield, WI 53018
(262) 646-7199
(1)
1884year founded
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Map of Divine Savior Holy Angels High School
#14Divine Savior Holy Angels High School
Gr: 9-12 | 680 students
Avg. class size: 12 students
All-girls (Catholic)
4257 N 100th St
Milwaukee, WI 53222
(414) 462-3742
(2)
1892year founded
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Sheboygan Christian School Photo
#15Sheboygan Christian School
Gr: PK-12 | 596 students
Avg. class size: 15 students
Sports: 10 | Extracurriculars: 9
Christian
929 Greenfield Avenue
Sheboygan, WI 53081
(920) 458-9981
(9)
1898year founded
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Milwaukee Lutheran Middle & High School Photo
#16(°Õ16–T17)Milwaukee Lutheran Middle & High School
Gr: 6-12 | 1,160 students
Avg. class size: 20 students
Sports: 19 | Extracurriculars: 17
Lutheran Church Missouri Synod
9700 W Grantosa Drive
Milwaukee, WI 53222
(414) 461-6000
1903year founded
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Wisconsin Lutheran High School Photo
#16(°Õ16–T17)Wisconsin Lutheran High School
Gr: 9-12 | 925 students
Avg. class size: 20 students
Sports: 12 | Extracurriculars: 48
Wisconsin Evangelical Lutheran Synod
330 N Glenview Ave
Milwaukee, WI 53213
(414) 453-4567
1903year founded
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Baldwin Christian School Photo
#18Baldwin Christian School
Gr: PK-12 | 62 students
Avg. class size: 10 students
Extracurriculars: 2
Specialized Curriculum (Christian)
2095 90th Ave
Baldwin, WI 54002
(715) 684-2656
(1)
1907year founded
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Map of St. Marys Springs Academy
#19St. Marys Springs Academy
Gr: PK-12 | 744 students
Avg. class size: 21 students
Catholic
114 Amory St
Fond Du Lac, WI 54935
(920) 924-0993
1909year founded
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Catholic Central High School Photo
#20(°Õ20–T21)Catholic Central High School
Gr: 9-12 | 129 students
Avg. class size: 8 students
Sports: 17 | Extracurriculars: 16
Catholic
148 Mchenry St
Burlington, WI 53105
(262) 763-1510
(3)
1920year founded
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Map of St. Charles Inc
#20(°Õ20–T21)St. Charles Inc
Gr: 6-11 | 28 students
Special Education School
151 S. 84th St. (no Longer Uses A P.o. Box)
Milwaukee, WI 53214
(414) 476-3710
1920year founded
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Winnebago Lutheran Academy Photo
#22Winnebago Lutheran Academy
Gr: 9-12 | 354 students
Avg. class size: 12 students
Sports: 14 | Extracurriculars: 6
Wisconsin Evangelical Lutheran Synod
475 E Merrill Ave
Fond Du Lac, WI 54935
(920) 921-4930
1925year founded
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Map of Messmer High School
#23Messmer High School
Gr: 9-12 | 525 students
Avg. class size: 22 students
Sports: 9 | Extracurriculars: 12
Catholic
742 W Capitol Drive
Milwaukee, WI 53206
(414) 264-5440
1926year founded
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Map of St. Mary Catholic High School
#24St. Mary Catholic High School
Gr: 9-12 | 249 students
Avg. class size: 18 students
Sports: 14
Catholic
1050 Zephyr Drive
Neenah, WI 54956
(920) 722-7796
1927year founded
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Map of Pius Xi Catholic High School
#25Pius Xi Catholic High School
Gr: 9-12 | 850 students
Catholic
135 N 76th St
Milwaukee, WI 53213
(414) 290-7000
1929year founded
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Map of Wells Street Academy
#26Wells Street Academy
Gr: PK-12 | 20 students
Special Education School
2020 W Wells St
Milwaukee, WI 53233
(414) 937-2020
1938year founded
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Racine Lutheran High School Photo
#27Racine Lutheran High School
Gr: 9-12 | 375 students
Avg. class size: 12 students
Sports: 13 | Extracurriculars: 27
Lutheran Church Missouri Synod
251 Luedtke Ave
Racine, WI 53405
(262) 637-6538
1944year founded
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Central Wisconsin Christian Schools (PreK-12) Photo
#28Central Wisconsin Christian Schools (PreK-12)
Gr: PK-12 | 557 students
Avg. class size: 21 students
Sports: 9 | Extracurriculars: 14
Calvinist
301 Fox Lake Rd
Waupun, WI 53963
(920) 324-4233
1948year founded
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Map of Catholic Memorial High School
#29(°Õ29–T30)Catholic Memorial High School
Gr: 9-12 | 589 students
Avg. class size: 14 students
Catholic
601 E College Ave
Waukesha, WI 53186
(262) 542-7101
1949year founded
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Wisconsin Academy Photo
#29(°Õ29–T30)Wisconsin Academy
Gr: 9-12 | 86 students
Extracurriculars: 9
Seventh Day Adventist
N2355 Du Borg Rd
Columbus, WI 53925
(920) 623-3300
(2)
1949year founded
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Map of Assumption Catholic Schools
#31(°Õ31–T34)Assumption Catholic Schools
Gr: PK-12 | 409 students
Catholic
440 Mead St
Wisconsin Rapids, WI 54494
(715) 422-0902
1951year founded
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Map of Newman Catholic High School
#31(°Õ31–T34)Newman Catholic High School
Gr: 6-12 | 202 students
Catholic
1130 W Bridge St
Wausau, WI 54401
(715) 845-8274
1951year founded
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Map of Newman Catholic Middle School
#31(°Õ31–T34)Newman Catholic Middle School
Gr: 7-9 | 159 students
Catholic
1130 W Bridge St
Wausau, WI 54401
(715) 842-4857
1951year founded
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Map of Newman Catholic Schools
#31(°Õ31–T34)Newman Catholic Schools
Gr: 6-12 | 284 students
Catholic
619 Stark St
Wausau, WI 54403
(715) 845-5735
1951year founded
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Regis High & Middle School Photo
#35Regis High & Middle School
Gr: 6-12 | 416 students
Sports: 15
Catholic
2100 Fenwick Ave
Eau Claire, WI 54701
(715) 830-2271
1952year founded
View Profile
Show 100 more private schools in Wisconsin (out of 151 total schools)
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Frequently Asked Questions

What is the Wisconsin average private high schools founding year?
The Wisconsin average private high schools founding year is 1967 for 2026-27.
What are the private high schools with oldest founding year in Wisconsin?
The top ranked private high schools in Wisconsin include Sainta, Wayland Academy and Marquette University High School.

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