#1 Best Private Middle Schools in McHenry County, IL
SS Peter & Paul School
Parish school · Grades Pre-K–8
Smaller classes than 78% of Catholic schools in Illinois
Cary, IL
A+Overall grade167 students10 students per teacher
2026 lists
Best Private Middle Schools in McHenry County, IL
Private schools in McHenry County, IL with middle-school grades and the highest overall grades. Top 9 of 9 schools.
#2 Best Private Middle Schools in McHenry County, IL
St. Thomas the Apostle School
Diocesan school · Grades Pre-K–8
The only Catholic school in Crystal Lake
Crystal Lake, IL
A+Overall grade164 students9 students per teacher
#3 Best Private Middle Schools in McHenry County, IL
St. Mary Catholic School
Diocesan school · Grades Pre-K–8
Smaller classes than 71% of Catholic schools in Illinois
Woodstock, IL
A+Overall grade125 students10 students per teacher
#4 Best Private Middle Schools in McHenry County, IL
Montini Catholic School
Diocesan school · Grades Pre-K–8
Smaller classes than 64% of Catholic schools in Illinois
McHenry, IL
A+Overall grade196 students11 students per teacher
#5 Best Private Middle Schools in McHenry County, IL
Crystal Lake Montessori School
Montessori school · Grades Pre-K–8
The only Montessori school in Woodstock
Woodstock, IL
A+Overall grade76 students3 students per teacher
#6 Best Private Middle Schools in McHenry County, IL
Trinity Oaks Christian Academy
Christian school (nondenominational) · Grades Pre-K–12
Growing: enrollment up 56% since 2011–12
Cary, IL
BOverall grade268 students12 students per teacher
#7 Best Private Middle Schools in McHenry County, IL
St. Margaret Mary Catholic School
Diocesan school · Grades Pre-K–8
Serving families in Algonquin since at least 2011
Algonquin, IL
BOverall grade166 students17 students per teacher
#8 Best Private Middle Schools in McHenry County, IL
Zion Lutheran School
Lutheran (Missouri Synod) school · Grades Pre-K–8
Serving families in Marengo since at least 2011
Marengo, IL
B-Overall grade191 students15 students per teacher
#9 Best Private Middle Schools in McHenry County, IL
Immanuel Lutheran School
Lutheran (Missouri Synod) school · Grades Pre-K–8
Growing: enrollment up 17% since 2011–12
Crystal Lake, IL
B-Overall grade232 students13 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.