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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.)
  • Duchesne300 (Upper School 9-12 (NCES 2023-24: 89/74/65/72). Total campus 761.)
  • FrassatiNot Published

Full Campus

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

School Day

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

Student–Teacher Ratio (federal data)

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

Class Schedule

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

Dress Code

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

Enrollment (school-reported)

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

Transportation

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

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

$9,100

2025-26 rate (newest published)

$33,600

2026-27 rate · Upper School

$24,050

2026-27 rate

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
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
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
Sibling discount10% off for each younger siblingMulti-student assistance available (amount not published)Not Published$3,000 off 2nd student; $9,425 off 3rd (tuition only)
Lower school on campus
Yes

14 months–12th (Montessori)

HS only
Yes

PK3–12

HS only
Open houseNot postedNot postedNov 1, 2026Oct 28, 2026
Required test
None
In-house placement test
ISEE
HSPT or ISEE

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

Application deadlineJan 15, 2027Not postedNot postedNot posted
Decision dateMar 5, 2027Not postedNot postedNot posted
Financial aid
Need-based
Need-based + Merit
Need-based + Merit
Need-based
AP coursesNot postedNot posted20Not posted
Enrollment2380300364
Student:Teacher14.4:14.5:18.1:111:1
Mass
Monthly
Monthly
Not Published
Weekly

Thursdays, 9:15 AM

Sports6 sports13 sports12 sports13 sports
Links

“Not posted” means the school hasn’t published it yet for this admissions cycle — check each school’s full profile for sources.