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2026 lists

Largest Private Schools in Sioux County, IA

The private schools in Sioux County, IA with the most students. Top 10 of 10 schools.

#2 Largest Private Schools in Sioux County, IA

Unity Christian High School

Calvinist school · Grades 9–12

327 students

Orange City, IA

B-Overall grade327 students15 students per teacher

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#4 Largest Private Schools in Sioux County, IA

Rock Valley Christian School

Christian school (nondenominational) · Grades Pre-K–8

202 students

Rock Valley, IA

BOverall grade202 students11 students per teacher

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#6 Largest Private Schools in Sioux County, IA

Ireton Christian Schools

Christian school (nondenominational) · Grades Pre-K–8

70 students

Ireton, IA

B+Overall grade70 students10 students per teacher

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#7 Largest Private Schools in Sioux County, IA

Trinity Christian High School

Calvinist school · Grades 9–12

69 students

Hull, IA

B+Overall grade69 students8 students per teacher

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#8 Largest Private Schools in Sioux County, IA

Spalding Catholic Schools

Diocesan school · Grades K–6

26 students

Alton, IA

AOverall grade26 students5 students per teacher

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#9 Largest Private Schools in Sioux County, IA

Spalding Catholic School

Diocesan school · Grades Pre-K–6

25 students

Alton, IA

AOverall grade25 students4 students per teacher

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#10 Largest Private Schools in Sioux County, IA

Spalding Catholic School

Diocesan school · Grades K–6

25 students

Alton, IA

AOverall grade25 students5 students per teacher

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From official public records, updated October 2026.

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