Private School Review - Established 2003
Tower Hill School Top 3 · Highest Avg. SAT Score (DE)
Sanford School Top 3 · Largest Endowment (DE)
Ursuline Academy Top 3 · Lowest Acceptance Rate (DE)

Average Private High School Endowment in Delaware

The average private high school endowment in Delaware is $0M (2026-27).
The private high school in Delaware with the highest endowment is Tower Hill School, with a endowment of $62M.

Quick Facts (26-27)

  • # DE Schools Ranked: 5
  • Top 20 Range (Endowment): $3M–$62M
  • DE School Avg.: $18M
  • National School Avg.: $30M

Quick Facts (26-27)

  • # DE Schools Ranked: 5
  • Top 20 Range (Endowment): $3M–$62M
  • DE School Avg.: $18M
  • National School Avg.: $30M
Show school map — Delaware (endowment range: $3M–$62M, avg $18M)
Endowment Range: $3M $62M Avg. Endowment: $17.9M

Average Private High School Endowment in Delaware (2026-27)

Showing 5 schools
Tower Hill School Photo
#1Tower Hill School
Gr: NS-12 | 870 students
Avg. class size: 15 students
Sports: 17 | Extracurriculars: 24
2813 W 17th Street
Wilmington, DE 19806
(302) 575-0550
$62endowment
View Profile
Sanford School Photo
#2Sanford School
Gr: NS-12 | 691 students
Avg. class size: 13 students
Sports: 16
6900 Lancaster Pike
Hockessin, DE 19707
(302) 235-6503
(2)
$14endowment
View Profile
Map of St. Andrew's School
#3St. Andrew's School
Gr: 9-12 | 318 students
Sports: 15
Episcopal
350 Noxontown Rd
Middletown, DE 19709
(302) 285-4231
$6endowment
View Profile
Ursuline Academy Photo
#4Ursuline Academy
Gr: PK-12 | 441 students
Avg. class size: 14 students
Sports: 15
Catholic
1106 Pennsylvania Avenue
Wilmington, DE 19806
(302) 658-7158
(10)
$5endowment
View Profile
Archmere Academy Photo
#5Archmere Academy
Gr: 9-12 | 469 students
Avg. class size: 15 students
Sports: 20 | Extracurriculars: 38
Catholic
3600 Philadelphia Pike
Claymont, DE 19703
(302) 798-6632
(7)
$3endowment
View Profile

Frequently Asked Questions

What are the private high schools with the highest endowment in Delaware?
The top ranked private high schools in Delaware include Tower Hill School, Sanford School and St. Andrew's School.

Recent Articles

How Much Unstructured Time Does Your Child Have?
How Much Unstructured Time Does Your Child Have?
Learn why unstructured time matters during a private school day, how recess, lunch, free periods, and transitions affect students, and what parents should evaluate before enrolling.
What Happens When Bullying Continues Outside School?
What Happens When Bullying Continues Outside School?
Learn how private schools may respond when bullying continues through social media, texts, gaming, and off-campus activities, and what parents should document, report, and expect.
How Private Schools Handle Food Allergies
How Private Schools Handle Food Allergies
Learn how private schools manage food allergies, from emergency plans and epinephrine access to cafeteria procedures, staff training, field trips, and the questions parents should verify before enrolling their child.

Quick Links

SCHOOL SEARCH TOOLS:
SCHOOL BY TYPE (DE):
OPEN-HOUSES & JOBS:
PUBLIC & BOARDING SCHOOLS:
PRIVATE SCHOOL DATA:

Most Popular Articles

Private School vs Public School: Key Differences (2026 Guide)
Private School vs Public School: Key Differences (2026 Guide)
 Do Your Child's SSAT or ISEE Scores Really Matter?
Do Your Child's SSAT or ISEE Scores Really Matter?
Delaware Private Schools By Tuition Cost
Delaware Private Schools By Tuition Cost

More Articles

Global Educator Empowerment
Premier School Models
Programs for Exceptional Learners
Well-Rounded Achievements
Excellence in School Security