#1 Fastest-Growing Private Schools in Winnebago County, WI
St. Mary Catholic Middle School
Diocesan school · Grades Pre-K–12
Enrollment up 456% in about a decade
Neenah, WI
A+Overall grade850 students8 students per teacher
2026 lists
Fastest-Growing Private Schools in Winnebago County, WI
Private schools in Winnebago County, WI whose enrollment has grown the most over the past decade. Top 9 of 9 schools.
#2 Fastest-Growing Private Schools in Winnebago County, WI
Valley Christian School
Christian school (nondenominational) · Grades Pre-K–12
Enrollment up 251% in about a decade
Oshkosh, WI
B-Overall grade702 students16 students per teacher
#3 Fastest-Growing Private Schools in Winnebago County, WI
Lourdes Academy Elementary School
Diocesan school · Grades Pre-K–4
Enrollment up 87% in about a decade
Oshkosh, WI
BOverall grade235 students13 students per teacher
#4 Fastest-Growing Private Schools in Winnebago County, WI
Neenah Lutheran School
Lutheran (Wisconsin Synod) school · Grades Pre-K–8
Enrollment up 54% in about a decade
Neenah, WI
B+Overall grade173 students12 students per teacher
#5 Fastest-Growing Private Schools in Winnebago County, WI
Grace Lutheran School
Lutheran (Wisconsin Synod) school · Grades Pre-K–8
Enrollment up 47% in about a decade
Oshkosh, WI
BOverall grade163 students15 students per teacher
#6 Fastest-Growing Private Schools in Winnebago County, WI
Lourdes Academy Middle School
Parish school · Grades 5–8
Enrollment up 26% in about a decade
Oshkosh, WI
BOverall grade208 students13 students per teacher
#7 Fastest-Growing Private Schools in Winnebago County, WI
New Hope Christian School
Lutheran (Missouri Synod) school · Grades Pre-K–8
Enrollment up 16% in about a decade
Neenah, WI
B-Overall grade200 students15 students per teacher
#8 Fastest-Growing Private Schools in Winnebago County, WI
Martin Luther Lutheran School
Lutheran (Wisconsin Synod) school · Grades Pre-K–8
Enrollment up 15% in about a decade
Oshkosh, WI
AOverall grade115 students11 students per teacher
#9 Fastest-Growing Private Schools in Winnebago County, WI
St. Mary Catholic High School
Diocesan school · Grades 9–12
Enrollment up 14% in about a decade
Neenah, WI
A+Overall grade272 students11 students per teacher
From official public records, updated October 2026.