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Academics

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))
  • St. Peter CTHSNone (No ISEE/HSPT. Admissions process: inquiry, then campus tour, then FACTS application.)
  • DuchesneISEE (Administered externally; campus tour + family interview also required)

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)
  • St. Peter CTHSEnglish teacher recommendation; Math teacher recommendation; Transcript
  • DuchesneEnglish and/or Math teacher + principal/head of school; 2 years transcripts

AP Courses

  • St. Thomas21 (40+ advanced/AP courses overall)
  • St. Agnes25
  • St. Peter CTHSNot Published
  • Duchesne20 (AP enrollment caps: soph 1 / jr 2 / sr 3; AP exam required if enrolled)

Dual Credit

  • St. ThomasYes (4 dual-credit courses via University of St. Thomas)
  • St. AgnesNot Published
  • St. Peter CTHSYes (Houston Community College partnership — pathway courses at St. Peter and two HCC campuses; school provides transport during the school day)
  • DuchesneYes (University of St. Thomas partnership; online electives via SophieConnect + One Schoolhouse)

Honors Courses

  • St. ThomasNot Published
  • St. Agnes12
  • St. Peter CTHSNot Published
  • Duchesne12 (Called "Advanced" courses)

World Languages

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

AP Exams Scored 3+

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

Application Deadline

  • St. Thomas2027-01-15 (Opens Aug 3, 2026; supporting docs due Jan 31; rolling after)
  • St. AgnesNot Published
  • St. Peter CTHSNot Published
  • DuchesneNot Published

Career & Technical Pathways

  • St. ThomasNot Published
  • St. AgnesNot Published
  • St. Peter CTHSBusiness · Construction · Education · Information Technology · Health Sciences (The school describes itself as the first Catholic career and technical high school in Texas, and the second in the United States. Graduates earn a diploma plus a Level 1 industry certification, with a possible HCC associate degree and job placement with partner businesses.)
  • DuchesneNot Published

Language Credits Required

  • St. ThomasNot Published
  • St. Agnes2
  • St. Peter CTHSNot Published
  • DuchesneNot Published

Learning Support

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

Notable Programs

  • St. ThomasNot Published
  • St. AgnesNot Published
  • St. Peter CTHSNot Published
  • DuchesneRobotics and competitive debate programs; IT internship with Microsoft certification; junior Research Paper requirement

Prior Cycle (for reference)

  • St. ThomasNot Published
  • St. AgnesNot Published
  • St. Peter CTHS2026-27 cycle for reference: application due Jan 15, decisions released Mar 6, enrollment reply due Mar 25. 2027-28 dates not yet posted.
  • DuchesneNot Published

Robotics

  • St. ThomasNot Published
  • St. AgnesSpectrum 3847 — 12 consecutive FIRST Championship appearances
  • St. Peter CTHSNot Published
  • DuchesneNot Published

Test Score Deadline

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

2026-27 rate

$28,400

2026-27 rate

$15,000

2026-27 rate · most families pay far less after aid

$33,600

2026-27 rate · Upper School

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

No itemized fees published.

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 discount$2,000/yr per sibling after the firstNot PublishedNot PublishedNot Published
Lower school on campusHS onlyHS onlyHS only
Yes

PK3–12

Open houseDec 6, 2026Not postedNot postedNov 1, 2026
Required test
ISEE

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

ISEE

Offered on campus: Nov 14, 2026

None
ISEE
Application deadlineJan 15, 2027Not postedNot postedNot posted
Decision dateMar 5, 2027Not postedNot postedNot posted
Financial aid
Need-based + Merit
Need-based

No merit scholarships

Need-based
Need-based + Merit
AP courses2125Not posted20
Enrollment79193426300
Student:Teacher9:19:1Not Published8.1:1
Mass
Monthly
Weekly

Thursdays, 9:10 AM

Monthly
Not Published
Sports12 sports12 sportsNot posted12 sports
Links

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