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Academics

AP Courses

  • St. Thomas21 (40+ advanced/AP courses overall)
  • St. Agnes25
  • Duchesne20 (AP enrollment caps: soph 1 / jr 2 / sr 3; AP exam required if enrolled)
  • Incarnate Word18 (Academics page says 18, FAQ says 19; AP Honor Roll Platinum; >75% of AP testers score 3-5)

Entrance Exam

  • St. ThomasISEE (School code 571055; freshmen. Transfers: ISEE or PSAT.)
  • St. AgnesISEE (School code 443420; up to 2 scores; first attempt before Dec 1 (ERB rule))
  • DuchesneISEE (Administered externally; campus tour + family interview also required)
  • Incarnate WordISEE (School code 570451; up to two scores. Application opens Aug 17, 2026.)

Recommendations

  • St. ThomasMath + English teachers (HAIS forms, after Dec 1); student statement + resume; report cards gr 6-8
  • St. AgnesEnglish + Math teachers (due Jan 14, 2027)
  • DuchesneEnglish and/or Math teacher + principal/head of school; 2 years transcripts
  • Incarnate WordMath + English teachers (HAIS forms); transcripts 6th, 7th, 1st-sem 8th

Dual Credit

  • St. ThomasYes (4 dual-credit courses via University of St. Thomas)
  • St. AgnesNot Published
  • DuchesneYes (University of St. Thomas partnership; online electives via SophieConnect + One Schoolhouse)
  • Incarnate WordYes (4 courses with Lone Star College)

Application Deadline

  • St. Thomas2027-01-15 (Opens Aug 3, 2026; supporting docs due Jan 31; rolling after)
  • St. AgnesNot Published
  • DuchesneNot Published
  • Incarnate Word2026-12-14 (Earliest deadline of the Houston Catholic schools; supplemental materials Jan 29, 2027)

Honors Courses

  • St. ThomasNot Published
  • St. Agnes12
  • Duchesne12 (Called "Advanced" courses)
  • Incarnate WordNot Published

Notable Programs

  • St. ThomasNot Published
  • St. AgnesNot Published
  • DuchesneRobotics and competitive debate programs; IT internship with Microsoft certification; junior Research Paper requirement
  • Incarnate WordYoung Leaders Program; 5 endorsements; STEM emphasis

World Languages

  • St. ThomasFrench · Spanish · Mandarin · Latin
  • St. AgnesNot Published
  • DuchesneFrench (incl. Advanced IV-DELF B1) · Spanish (incl. AP) · American Sign Language I-III
  • Incarnate WordNot Published

AP Exams Scored 3+

  • St. ThomasNot Published
  • St. Agnes97 (% of AP exams scored 3+)
  • DuchesneNot Published
  • Incarnate WordNot Published

Language Credits Required

  • St. ThomasNot Published
  • St. Agnes2
  • DuchesneNot Published
  • Incarnate WordNot Published

Learning Support

  • St. ThomasLearning Enrichment Center; college counseling with 4-year plan
  • St. AgnesNot Published
  • DuchesneNot Published
  • Incarnate WordNot Published

Robotics

  • St. ThomasNot Published
  • St. AgnesSpectrum 3847 — 12 consecutive FIRST Championship appearances
  • DuchesneNot Published
  • Incarnate WordNot Published

Test Score Deadline

  • St. ThomasNot Published
  • St. Agnes2027-02-01
  • DuchesneNot Published
  • Incarnate WordNot Published
Commute from home
Tuition
$27,900

2026-27 rate

$28,400

2026-27 rate

$33,600

2026-27 rate · Upper School

$22,800

2026-27 rate

What's included
Included in tuition see list
  • Laptop & technology

Charged separately:

  • Application fee: $75
  • Registration fee: $700
  • Camp Aquinas (freshman retreat): $650 (freshmen)
  • Class retreat: $325 (returning/transfer students)
  • Books: $550
  • Athletics fee: $250 (per sport) — optional
  • AP exam: $99 (per course) — optional
Fees listed separately see fees
  • Application fee: $75 ($125 for transfer applicants)
  • Enrollment deposit: $500
  • Tablet PC (technology): $1,725
  • AP test fee: $105 (per AP / Honors-AP class) — optional
  • Senior fee: $350 (seniors only) — optional
  • Athletics fee: $150 (per sport) — 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
Fees listed separately see fees
  • Application fee: $75
  • Registration fee: $350
  • Tuition deposit: $500
  • Freshman fee (orientation camp): $350 (freshmen)
  • Senior fee (graduation + retreat): $300 (seniors)
  • Books:
Sibling discount$2,000/yr per sibling after the firstNot PublishedNot PublishedNot Published
Lower school on campusHS onlyHS only
Yes

PK3–12

HS only
Open houseDec 6, 2026Not postedNov 1, 2026Nov 8, 2026
Required test
ISEE

Offered on campus: Nov 14, 2026 · Jan 9, 2027

ISEE

Offered on campus: Nov 14, 2026

ISEE
ISEE

Offered on campus: Jan 9, 2027

Application deadlineJan 15, 2027Not postedNot postedDec 14, 2026
Decision dateMar 5, 2027Not postedNot postedMar 5, 2027
Financial aid
Need-based + Merit
Need-based

No merit scholarships

Need-based + Merit
Need-based + Merit
AP courses21252018
Enrollment791934300248
Student:Teacher9:19:18.1:18.3:1
Mass
Monthly
Weekly

Thursdays, 9:10 AM

Not Published
Monthly
Sports12 sports12 sports12 sports10 sports
Links

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