Private School Review - Established 2003
St. Elizabeth School Top 3 · Most AP Courses (DE)
Tower Hill School Top 3 · Highest Avg. SAT Score (DE)
Sanford School Top 4 · Most AP Courses (DE)

Average Private High School endowment in Delaware

The average private high school endowment in Delaware is $70.5M (2026).
The private high school in Delaware with the highest endowment is St. Elizabeth School, with a endowment of $350M.

Quick Facts (2026)

  • # DE Schools Ranked: 7
  • Top 20 Range (Endowment): $3–$350
  • DE School Avg.: $71
  • National School Avg.: $42

Quick Facts (2026)

  • # DE Schools Ranked: 7
  • Top 20 Range (Endowment): $3–$350
  • DE School Avg.: $71
  • National School Avg.: $42

Delaware Average Endowment (Trends)

Year Delaware (DE) avg
2025 $81.4
2024 $55.7
2023 $55.7
2022 $5
2021 $5
2020 $5
2019 $5
Download Table: Download as CSV | Download as XML | Download as JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Show school map — Delaware (endowment range: $3–$350, avg $71)
Endowment Range: $3M $350M Avg. Endowment: $70.5M

Average Private High School endowment in Delaware (2026)

Showing 7 schools
St. Elizabeth School Photo
#1St. Elizabeth School
Gr: PK-12 | 433 students
Avg. class size: 20 students
Sports: 14
Catholic
1500 Cedar St
Wilmington, DE 19805
(302) 656-3369
$350endowment
View Profile
Tower Hill School Photo
#2Tower Hill School
Gr: NS-12 | 849 students
Avg. class size: 15 students
Sports: 17 | Extracurriculars: 24
2813 W 17th Street
Wilmington, DE 19806
(302) 575-0550
$66endowment
View Profile
Map of Caravel Academy
#3Caravel Academy
Gr: PK-12 | 1,117 students
Avg. class size: 15 students
2801 Del Laws Rd
Bear, DE 19701
(302) 834-8938
$50endowment
View Profile
Sanford School Photo
#4Sanford School
Gr: NS-12 | 703 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
#5St. 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
#6Ursuline 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
#7Archmere 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 is the Delaware average private high schools endowment?
The Delaware average private high schools endowment is $70.5M for 2026.
What are the private high schools with the highest endowment in Delaware?
The top ranked private high schools in Delaware include St. Elizabeth School, Tower Hill School and Caravel Academy.

Recent Articles

Will This Curriculum Still Matter in 2035?
Will This Curriculum Still Matter in 2035?
Learn how to evaluate future-ready private school curricula for 2035, focusing on durable knowledge, critical thinking, AI literacy, adaptability, communication, creativity, and real-world learning before choosing a school.
Private Schools for Creators, Trades & Startups
Private Schools for Creators, Trades & Startups
Explore how private schools support non-traditional career paths in creative industries, skilled trades, and entrepreneurship, plus what families should evaluate when choosing specialized programs for future-ready students today.
First 90 Days at Private School: Parent Guide
First 90 Days at Private School: Parent Guide
Learn how to read your child’s first 90 days at private school, distinguish healthy adjustment from genuine struggles, and know when academic, social, or emotional concerns require action.

Quick Links

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

Most Popular Articles

Delaware Private Schools By Tuition Cost
Delaware Private Schools By Tuition Cost
 A Parent’s Guide to Private School Entrance Exams
A Parent’s Guide to Private School Entrance Exams
Choosing Between a Traditional Private School and a Microschool
Choosing Between a Traditional Private School and a Microschool

More Articles

Leadership in Private Education
Global Educator Empowerment
Premier School Models
Excellence in School Security
Advanced Learning Frameworks