#1 Most Diverse Private Schools in New Castle County, DE
Red Lion Christian Academy
Christian school (nondenominational) · Grades K–12
Largest group: 35% of students
Bear, DE
AOverall grade695 students10 students per teacher
2026 lists
Most Diverse Private Schools in New Castle County, DE
Private schools in New Castle County, DE with the most varied mix of students. Top 30 of 30 schools.
#2 Most Diverse Private Schools in New Castle County, DE
Fairwinds Christian School
Baptist school · Grades Pre-K–12
Largest group: 40% of students
Bear, DE
B+Overall grade173 students12 students per teacher
#3 Most Diverse Private Schools in New Castle County, DE
Learning Express Academy
Independent school · Grades K–8
Largest group: 45% of students
Newark, DE
AOverall grade55 students6 students per teacher
#4 Most Diverse Private Schools in New Castle County, DE
Harvest Christian Academy New Castle
Christian school (nondenominational) · Grades Pre-K–12
Largest group: 50% of students
New Castle, DE
B+Overall grade100 students9 students per teacher
#5 Most Diverse Private Schools in New Castle County, DE
St. Anthony of Padua Grade School
Diocesan school · Grades Pre-K–8
Largest group: 52% of students
Wilmington, DE
A+Overall grade161 students9 students per teacher
#6 Most Diverse Private Schools in New Castle County, DE
Islamic Academy of Delaware
Islamic school · Grades Pre-K–8
Largest group: 52% of students
Newark, DE
A+Overall grade124 students5 students per teacher
#7 Most Diverse Private Schools in New Castle County, DE
St. Elizabeth School
Diocesan school · Grades Pre-K–12
Largest group: 53% of students
Wilmington, DE
BOverall grade364 students12 students per teacher
#8 Most Diverse Private Schools in New Castle County, DE
Harvest Christian Academy
Christian school (nondenominational) · Grades Pre-K–12
Largest group: 55% of students
New Castle, DE
A+Overall grade94 students8 students per teacher
#9 Most Diverse Private Schools in New Castle County, DE
St. Annes Episcopal School
Episcopal school · Grades Pre-K–8
Largest group: 57% of students
Middletown, DE
A+Overall grade256 students7 students per teacher
#10 Most Diverse Private Schools in New Castle County, DE
Concord Christian Academy
Baptist school · Grades Pre-K–12
Largest group: 57% of students
Wilmington, DE
B+Overall grade136 students9 students per teacher
#11 Most Diverse Private Schools in New Castle County, DE
St. Andrew's School
Episcopal school · Grades 9–12
Largest group: 59% of students
Middletown, DE
A+Overall grade320 students6 students per teacher
#12 Most Diverse Private Schools in New Castle County, DE
Caravel Academy
Independent school · Grades Pre-K–12
Largest group: 60% of students
Bear, DE
B+Overall grade1,120 students10 students per teacher
#13 Most Diverse Private Schools in New Castle County, DE
The Tatnall School
Independent school · Grades Pre-K–12
Largest group: 62% of students
Wilmington, DE
A+Overall grade457 students6 students per teacher
#14 Most Diverse Private Schools in New Castle County, DE
Aquinas Academy
Independent Catholic school · Grades K–12
Largest group: 65% of students
Bear, DE
B+Overall grade75 students9 students per teacher
#15 Most Diverse Private Schools in New Castle County, DE
The Independence School
Independent school · Grades Pre-K–8
Largest group: 67% of students
Newark, DE
AOverall grade384 students8 students per teacher
#16 Most Diverse Private Schools in New Castle County, DE
Christ the Teacher Catholic School
Diocesan school · Grades Pre-K–8
Largest group: 70% of students
Newark, DE
B-Overall grade524 students23 students per teacher
#17 Most Diverse Private Schools in New Castle County, DE
Nativity Preparatory School of Wilmington
Diocesan school · Grades 5–8
Largest group: 72% of students
Wilmington, DE
A+Overall gradeAll boys53 students8 students per teacher
#18 Most Diverse Private Schools in New Castle County, DE
St. Edmond's Academy
Independent Catholic school · Grades Pre-K–8
Largest group: 74% of students
Wilmington, DE
A+Overall gradeAll boys158 students9 students per teacher
#19 Most Diverse Private Schools in New Castle County, DE
Centerville Layton School
Independent school · Grades K–12
Largest group: 77% of students
Wilmington, DE
AOverall grade88 students3 students per teacher
#20 Most Diverse Private Schools in New Castle County, DE
Ursuline Academy, Lower
Independent Catholic school · Grades 3–8
Largest group: 78% of students
Wilmington, DE
A+Overall grade456 students8 students per teacher
#21 Most Diverse Private Schools in New Castle County, DE
The Pilot School
Special education school · Grades K–8
Largest group: 79% of students
Wilmington, DE
AOverall grade136 students4 students per teacher
#22 Most Diverse Private Schools in New Castle County, DE
Newark Center for Creative Learning
Alternative school · Grades K–8
Largest group: 81% of students
Newark, DE
AOverall grade73 students7 students per teacher
#23 Most Diverse Private Schools in New Castle County, DE
St. Mark's High School
Diocesan school · Grades 9–12
Largest group: 83% of students
Wilmington, DE
BOverall grade829 students17 students per teacher
#24 Most Diverse Private Schools in New Castle County, DE
Padua Academy
Diocesan school · Grades 9–12
Largest group: 83% of students
Wilmington, DE
A+Overall gradeAll girls424 students11 students per teacher
From official public records, updated October 2026.