#1 Best Catholic 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 Catholic Schools in McHenry County, IL
The highest-graded schools of this kind in McHenry County, IL. Top 6 of 6 schools.
#2 Best Catholic 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 Catholic 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 Catholic Schools in McHenry County, IL
Marian Central Catholic High School
Diocesan school · Grades 9–12
99% of graduates go to four-year colleges
Woodstock, IL
A+Overall grade294 students12 students per teacher
#5 Best Catholic 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
#6 Best Catholic 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
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.