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Entrance Exam

St. John XXIIIISEE (School code 570048; 9th grade. 11th/12th transfers submit PSAT. Last cycle: opened Sept 1, deadline Jan 15, docs Jan 31, rolling after.)
DuchesneISEE (Administered externally; campus tour + family interview also required)
St. Catherine'sNone (No admission test. Inquiry → adults-only tour → director meeting → application ($150) + records + lesson samples → student classroom visit. 9th graders enter the Adolescent Community (gr 7-9); High School entry is gr 10-12.)

World Languages

St. John XXIIISpanish (confirmed via Spanish NHS; full list not published)
DuchesneFrench (incl. Advanced IV-DELF B1) · Spanish (incl. AP) · American Sign Language I-III
St. Catherine'sSpanish · Latin/French/ASL/Portuguese via independent study & university partnerships

Recommendations

St. John XXIIITeacher recommendations (school forms) + official transcripts; interviews for transfers only
DuchesneEnglish and/or Math teacher + principal/head of school; 2 years transcripts
St. Catherine'sNot Published

Academic Model

St. John XXIIINot Published
DuchesneNot Published
St. Catherine'sAMI-accredited Catholic Montessori adolescent program — four integrated areas (Theology, Integrated Humanities, Integrated Sciences, Mathematics); internships (Houston Methodist, law/design firms), university partnerships (St. Thomas, Texas A&M AgriLife), independent study; graduates build a "body of work" (No AP program; university partnerships and internships serve the advanced-work role.)

AP Courses

St. John XXIIINot Published
Duchesne20 (AP enrollment caps: soph 1 / jr 2 / sr 3; AP exam required if enrolled)
St. Catherine'sNot Published

AP Program

St. John XXIIIAP and honors coursework offered (count not published; Course Selection Guide not public)
DuchesneNot Published
St. Catherine'sNot Published

Dual Credit

St. John XXIIINot Published
DuchesneYes (University of St. Thomas partnership; online electives via SophieConnect + One Schoolhouse)
St. Catherine'sNot Published

Honors Courses

Notable Programs

St. John XXIIINot Published
DuchesneRobotics and competitive debate programs; IT internship with Microsoft certification; junior Research Paper requirement
St. Catherine'sNot Published

Commute from home

	St. John XXIII College Preparatory	Duchesne Academy of the Sacred Heart	St. Catherine's Montessori
Tuition	$22,100 2026-27 rate	$33,600 2026-27 rate · Upper School	$20,560 2026-27 rate · 9th grade; grades 10-12: $20,753
What's included	Fees listed separately see fees New Student Enrollment Fee: $500 Financial aid application (Clarity): $60 — 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: $150 Tuition deposit: $750 New Student Fee: $850 Facility fee: $800 Program fee: $2,500–$2,750
Sibling discount	2nd student $17,680 ($4,420 off)	Not Published	10% off for each younger sibling
Lower school on campus	HS only	Yes PK3–12	Yes 14 months–12th (Montessori)
Open house	Not posted	Nov 1, 2026	Not posted
Required test	ISEE	ISEE	None
Application deadline	Not posted	Not posted	Jan 15, 2027
Decision date	Not posted	Not posted	Mar 5, 2027
Financial aid	Need-based + Merit	Need-based + Merit	Need-based
AP courses	Not posted	20	Not posted
Enrollment	432	300	23
Student:Teacher	11.3:1	8.1:1	14.4:1
Mass	Weekly Daily Mass also offered	Not Published	Monthly
Sports	13 sports	12 sports	6 sports
Links	Full profile Admissions	Full profile Admissions	Full profile Admissions

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