#1 Most Diverse Private Schools in Naugatuck Valley County, CT
Westover School
Independent school · Grades 9–12
Largest group: 40% of students
Middlebury, CT
A+Overall gradeAll girls142 students5 students per teacher
2026 lists
Most Diverse Private Schools in Naugatuck Valley County, CT
Private schools in Naugatuck Valley County, CT with the most varied mix of students. Top 16 of 16 schools.
#2 Most Diverse Private Schools in Naugatuck Valley County, CT
The Cheshire Academy
Independent school · Grades 9–12
Largest group: 44% of students
Cheshire, CT
A+Overall grade341 students6 students per teacher
#3 Most Diverse Private Schools in Naugatuck Valley County, CT
Catholic Academy of Waterbury
Diocesan school · Grades Pre-K–8
Largest group: 49% of students
Waterbury, CT
B+Overall grade171 students16 students per teacher
#4 Most Diverse Private Schools in Naugatuck Valley County, CT
Children's Community School
Independent school · Grades Pre-K–8
Largest group: 51% of students
Waterbury, CT
B+Overall grade129 students9 students per teacher
#5 Most Diverse Private Schools in Naugatuck Valley County, CT
Holy Cross High School
Independent Catholic school · Grades 9–12
Largest group: 63% of students
Waterbury, CT
B+Overall grade495 students13 students per teacher
#6 Most Diverse Private Schools in Naugatuck Valley County, CT
Immanuel Lutheran School
Lutheran (Missouri Synod) school · Grades Pre-K–8
Largest group: 63% of students
Bristol, CT
BOverall grade87 students11 students per teacher
#7 Most Diverse Private Schools in Naugatuck Valley County, CT
Assumption School
Parish school · Grades Pre-K–8
Largest group: 71% of students
Ansonia, CT
B+Overall grade163 students14 students per teacher
#8 Most Diverse Private Schools in Naugatuck Valley County, CT
Holy Trinity Catholic Academy
Diocesan school · Grades Pre-K–8
Largest group: 73% of students
Shelton, CT
A+Overall grade120 students9 students per teacher
#9 Most Diverse Private Schools in Naugatuck Valley County, CT
St. Paul Catholic High School
Diocesan school · Grades 9–12
Largest group: 74% of students
Bristol, CT
B-Overall grade388 students14 students per teacher
#10 Most Diverse Private Schools in Naugatuck Valley County, CT
St. Joseph School
Parish school · Grades Pre-K–8
Largest group: 75% of students
Bristol, CT
AOverall grade171 students13 students per teacher
#11 Most Diverse Private Schools in Naugatuck Valley County, CT
St. John's School
Parish school · Grades 5–8
Largest group: 80% of students
Watertown, CT
B+Overall grade101 students13 students per teacher
#12 Most Diverse Private Schools in Naugatuck Valley County, CT
St. Matthew School
Diocesan school · Grades Pre-K–8
Largest group: 81% of students
Bristol, CT
A+Overall grade142 students10 students per teacher
#13 Most Diverse Private Schools in Naugatuck Valley County, CT
St. Mary Magdalen School
Parish school · Grades Pre-K–4
Largest group: 82% of students
Oakville, CT
A+Overall grade137 students9 students per teacher
#14 Most Diverse Private Schools in Naugatuck Valley County, CT
St. John the Evangelist School
Diocesan school · Grades 5–8
Largest group: 89% of students
Watertown, CT
B+Overall grade101 students14 students per teacher
#15 Most Diverse Private Schools in Naugatuck Valley County, CT
Yeshiva K'tana of Waterbury
Jewish day school · Grades Pre-K–8
Largest group: 100% of students
Waterbury, CT
BOverall grade583 students6 students per teacher
#16 Most Diverse Private Schools in Naugatuck Valley County, CT
Bais Yaakov of Waterbury High School
Jewish day school · Grades 9–12
Largest group: 100% of students
Naugatuck, CT
B+Overall gradeAll girls86 students4 students per teacher
From official public records, updated October 2026.