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Daily Life

Enrollment (federal data)

  • St. Catherine's23 (Grades 9-12 (NCES 2023-24: 7/8/6/2); campus total ~265 (14 months-12th).)
  • O'Connell80 (NCES PSS 2023-24. Island campus; 4.5:1 student-teacher ratio.)
  • FrassatiNot Published
  • Duchesne300 (Upper School 9-12 (NCES 2023-24: 89/74/65/72). Total campus 761.)

Full Campus

  • St. Catherine's14 months - 12th grade (coed); Adolescent Community gr 7-9; High School gr 10-12 (launched 2017)
  • O'ConnellNot Published
  • FrassatiNot Published
  • DuchesnePK3–12 (all-girls); Upper School is grades 9–12

School Day

  • St. Catherine's8:00 AM - 3:45 PM (extended care available)
  • O'ConnellClasses 8:00 AM - 3:20 PM
  • FrassatiNot Published
  • DuchesneNot Published

Student–Teacher Ratio (federal data)

  • St. Catherine'sNot Published
  • O'ConnellNot Published
  • Frassati12.8:1 (NCES 2023-24: 321 / 25.0 FTE; school reports 11:1)
  • Duchesne8.1:1 (NCES 2023-24, campus-wide)

Class Schedule

  • St. Catherine'sNot Published
  • O'ConnellNot Published
  • FrassatiNot Published
  • DuchesneSix-term modular "MOD" schedule — 80-minute classes, 3-4 courses per mod, 29-30 days/mod

Dress Code

  • St. Catherine'sNot Published
  • O'ConnellNot Published
  • FrassatiRisse Brothers + Lands' End uniforms
  • DuchesneNot Published

Enrollment (school-reported)

  • St. Catherine'sNot Published
  • O'ConnellNot Published
  • Frassati364 (2025-26 Fast Facts; NCES 2023-24: 321 — young, growing school (opened 2013))
  • DuchesneNot Published

Transportation

  • St. Catherine'sNot Published
  • O'ConnellPaid van stops in Dickinson and La Marque (mainland commuters)
  • FrassatiNot Published
  • DuchesneNot Published
Commute from home
Tuition
$20,560

2026-27 rate · 9th grade; grades 10-12: $20,753

$9,100

2025-26 rate (newest published)

$24,050

2026-27 rate

$33,600

2026-27 rate · Upper School

What's included
Fees listed separately see fees
  • Application fee: $150
  • Tuition deposit: $750
  • New Student Fee: $850
  • Facility fee: $800
  • Program fee: $2,500–$2,750
Fees listed separately see fees
  • Registration fee: $450
  • Technology fee: $200
  • Sports fee: $150–$250 (per sport ($450 all-season package)) — optional
Included in tuition see list
  • Technology fee ($500)
  • Registration ($300)
  • Student activities ($400)
  • Textbooks ($650)

Charged separately:

  • Application fee: $75–$125
  • Enrollment deposit (new families): $700
  • Athletics & Fine Arts fee: $250 (per sport/season) — optional
Fees listed separately see fees
  • New Student Fee: $1,500
  • Enrollment deposit: $1,000
  • Technology fee (Grade 9): $2,600
  • Textbooks: $350 (approximate, Upper School)
  • Grade 10 College Tour: $500 (grade 10)
  • Graduation fee: $600 (seniors)
  • Class trips: $175–$2,800 — optional
  • AP exams: $100–$200 (per exam) — optional
  • Athletics fee: $150–$300 (per sport) — optional
Sibling discount10% off for each younger siblingMulti-student assistance available (amount not published)$3,000 off 2nd student; $9,425 off 3rd (tuition only)Not Published
Lower school on campus
Yes

14 months–12th (Montessori)

HS onlyHS only
Yes

PK3–12

Open houseNot postedNot postedOct 28, 2026Nov 1, 2026
Required test
None
In-house placement test
HSPT or ISEE

Offered on campus: Jan 9, 2027 · Jan 23, 2027

ISEE
Application deadlineJan 15, 2027Not postedNot postedNot posted
Decision dateMar 5, 2027Not postedNot postedNot posted
Financial aid
Need-based
Need-based + Merit
Need-based
Need-based + Merit
AP coursesNot postedNot postedNot posted20
Enrollment2380364300
Student:Teacher14.4:14.5:111:18.1:1
Mass
Monthly
Monthly
Weekly

Thursdays, 9:15 AM

Not Published
Sports6 sports13 sports13 sports12 sports
Links

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