St. Lawrence Seminary High School
Independent Catholic school · Grades 9–12
Mount Calvary, WI
301 Church St, Mount Calvary, WI 53057
Overall grade: A+
ChooseAPrivateSchool.com grade, from official facts compared with similar schools.
- A+Class size
- B+College-going
- A-Years serving families
- A+Diversity
What stands out
- The only Catholic school in Mount Calvary
- The only all-boys school in Mount Calvary
- Smaller classes than 86% of Catholic schools in Wisconsin
- Serving families in Mount Calvary since at least 2011
In Mount Calvary, Wisconsin, St. Lawrence Seminary High School is an independent Catholic school for students from 9th grade through 12th grade. About 136 students attend, with roughly 7 students per teacher, smaller classes than 86% of Catholic high schools in Wisconsin. It has been listed in official private school records since 2011–12. The school is an all-boys school and is part of the Archdiocese of Milwaukee. The school reports that about 80% of its graduates go on to four-year colleges. The school day runs about 9.5 hours, 172 days a year. Wisconsin has programs that can help pay tuition; ask the school whether it takes part.
At a glance
- Grades
- Grades 9–12
- Students
- 136
- Teachers
- 20.8 (full-time equivalent)
- Students per teacher
- 6.5
- Boys and girls
- All boys
- Religious affiliation
- Catholic · Independent Catholic school
- Diocese
- Archdiocese of Milwaukee
- School day
- About 9.5 hours
- School year
- 172 days
- Graduates going to 4-year colleges
- About 80% (the school's estimate for the class before the survey)
- Library
- Yes
Reviews
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How it compares
- Smaller classes than 86% of Catholic high schools in Wisconsin (7 students per teacher).
- A smaller school: fewer students than 81% of Catholic high schools in Wisconsin.
- Compared with 21 Catholic high schools in Wisconsin.
Students by survey year
Total students reported in official records since 2011–12.
Students by grade
Student body
Member of
- National Catholic Educational Association
- The Association of Boarding Schools
Help paying tuition in Wisconsin
These state programs can help pay private school tuition. Only participating schools can accept them, so ask St. Lawrence Seminary High School whether it takes part.
- Parental Choice Program · Voucher or scholarship
Questions to ask on a tour
- What is tuition, and what does it include (books, fees, uniforms, trips)?
- Do you offer financial aid, sibling discounts or payment plans?
- Do you accept ESA, voucher or tax-credit scholarship funds?
- How big are classes in my child's grade?
- What support is there for students who need extra help or more challenge?
- Is the school accredited, and by whom?
- What do a typical day and a typical week look like?
- How does the school communicate with families?
Questions about St. Lawrence Seminary High School
What grades does St. Lawrence Seminary High School serve?
St. Lawrence Seminary High School serves grades 9–12.
How many students attend St. Lawrence Seminary High School?
About 136 students, with 7 students per teacher, according to official records.
How much is tuition at St. Lawrence Seminary High School?
Call the school to ask about tuition, financial aid and payment plans. Wisconsin has programs that can help pay private school tuition; ask whether the school takes part.
Official record · Updated October 2026 · Official search · Something wrong? Tell us
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