#1 Best Private Middle Schools in St. Clair County, IL
Blessed Sacrament School
Parish school · Grades Pre-K–8
The smallest classes of any Catholic school in Belleville
Belleville, IL
A+Overall grade142 students10 students per teacher
2026 lists
Best Private Middle Schools in St. Clair County, IL
Private schools in St. Clair County, IL with middle-school grades and the highest overall grades. Top 13 of 13 schools.
#2 Best Private Middle Schools in St. Clair County, IL
Holy Trinity Catholic School
Parish school · Grades Pre-K–8
The only Catholic school in Fairview Heights
Fairview Heights, IL
A+Overall grade204 students11 students per teacher
#3 Best Private Middle Schools in St. Clair County, IL
Our Lady Queen of Peace School
Parish school · Grades Pre-K–8
Serving families in Belleville since at least 2011
Belleville, IL
A+Overall grade139 students12 students per teacher
#4 Best Private Middle Schools in St. Clair County, IL
Governor French Academy
Independent school · Grades Pre-K–12
Small classes: about 7 students per teacher
Belleville, IL
AOverall grade73 students7 students per teacher
#5 Best Private Middle Schools in St. Clair County, IL
St. Teresa Catholic School
Diocesan school · Grades Pre-K–8
Smaller classes than 61% of Catholic schools in Illinois
Belleville, IL
AOverall grade153 students11 students per teacher
#6 Best Private Middle Schools in St. Clair County, IL
Sister Thea Bowman
Diocesan school · Grades K–8
Smaller classes than 84% of Catholic schools in Illinois
East Saint Louis, IL
AOverall grade101 students9 students per teacher
#7 Best Private Middle Schools in St. Clair County, IL
St. James Catholic School
Diocesan school · Grades Pre-K–8
Smaller classes than 86% of Catholic schools in Illinois
Millstadt, IL
AOverall grade81 students9 students per teacher
#8 Best Private Middle Schools in St. Clair County, IL
St. John the Baptist School
Diocesan school · Grades Pre-K–8
Smaller classes than 85% of Catholic schools in Illinois
Smithton, IL
A-Overall grade64 students9 students per teacher
#9 Best Private Middle Schools in St. Clair County, IL
First Baptist Academy
Baptist school · Grades K–12
97% of graduates go to four-year colleges
O'Fallon, IL
A-Overall grade310 students10 students per teacher
#10 Best Private Middle Schools in St. Clair County, IL
Holy Childhood of Jesus School
Parish school · Grades Pre-K–8
Smaller classes than 80% of Catholic schools in Illinois
Mascoutah, IL
B+Overall grade132 students9 students per teacher
#11 Best Private Middle Schools in St. Clair County, IL
Unity Lutheran Christian Elementary School
Lutheran (Missouri Synod) school · Grades Pre-K–8
Serving families in East Saint Louis since at least 2011
East Saint Louis, IL
B+Overall grade112 students10 students per teacher
#12 Best Private Middle Schools in St. Clair County, IL
Notre Dame Academy of Belleville
Parish school · Grades Pre-K–8
One of 5 Catholic schools in Belleville
Belleville, IL
BOverall grade67 students
#13 Best Private Middle Schools in St. Clair County, IL
Zion Lutheran School
Lutheran (Missouri Synod) school · Grades Pre-K–8
Serving families in Belleville since at least 2011
Belleville, IL
BOverall grade256 students14 students per teacher
Grades compare each school's official facts, such as class size, how long it has served families and where graduates go, with similar schools. They're a starting point: visit, ask questions and trust what you see.