Catholic School CompassTrue north for Catholic families.
Aerial view of St. Mark's High School
Aerial imagery: U.S. Geological Survey (public domain). USGS

Catholic high school

St. Mark's High School

  • LocationWilmington, DE
  • Type and sizeDiocesan school · Grades 9–12 · 829 students

St. Mark's High School in Wilmington, Delaware is listed in the Diocese of Wilmington's school directory. No faith life information from the school has been recorded.

Catholic churches nearby

Map of St. Mark's High School, its Catholic center and nearby Catholic churches0.5 mi1 mi2 miSaint John the Beloved Parish: 2.0 mi1Saint John the Baptist - Holy Angels Parish: 2.3 mi2St. Mark's High School (campus)N1 mi
CampusCatholic church (numbered below)Open a street map ›
  1. Saint John the Beloved Parish — 2.0 mi · 907 Milltown Road, Wilmington
  2. Saint John the Baptist - Holy Angels Parish — 2.3 mi · 82 Possum Park Road, Newark

Within 3 miles, as mapped by OpenStreetMap contributors. The map may be incomplete. Confirm with the parish or diocese.

Faith scorecard

Each line is one thing we looked for. A check means yes, a half means partly, a dash means no. “Not enough information” means official sources did not say.

N/ASacramental life: Not enough information. Official sources do not cover enough of this to grade it yet.

Sacramental life

Not enough information: official sources cover less than 60% of this area.

  • Not enough information: Not enough information: official sources do not document this, so it is left out of the grade rather than counted as a no.
    All-school or class Masses during the school yearNot enough information: not found in official sources.
  • Not enough information: Not enough information: official sources do not document this, so it is left out of the grade rather than counted as a no.
    Daily Mass available to students on campusNot enough information: not found in official sources.
  • Not enough information: Not enough information: official sources do not document this, so it is left out of the grade rather than counted as a no.
    Confession offered to students during the school yearNot enough information: not found in official sources.
  • Not enough information: Not enough information: official sources do not document this, so it is left out of the grade rather than counted as a no.
    Eucharistic adoration offeredNot enough information: not found in official sources.
  • Not enough information: Not enough information: official sources do not document this, so it is left out of the grade rather than counted as a no.
    Priest chaplain serving the schoolNot enough information: not found in official sources.
N/ATheology and curriculum: Not enough information. Official sources do not cover enough of this to grade it yet.

Theology and curriculum

Not enough information: official sources cover less than 60% of this area.

  • Not enough information: Not enough information: official sources do not document this, so it is left out of the grade rather than counted as a no.
    Years of theology or religion requiredNot enough information: not found in official sources.
  • Not enough information: Not enough information: official sources do not document this, so it is left out of the grade rather than counted as a no.
    Theology courses follow the USCCB Curriculum FrameworkNot enough information: not found in official sources.
  • Not enough information: Not enough information: official sources do not document this, so it is left out of the grade rather than counted as a no.
    Philosophy, apologetics, or ethics course offeredNot enough information: not found in official sources.
  • Not enough information: Not enough information: official sources do not document this, so it is left out of the grade rather than counted as a no.
    Faith integrated across the curriculum (stated in the program of studies or mission)Not enough information: not found in official sources.
N/ACampus culture: Not enough information. Official sources do not cover enough of this to grade it yet.

Campus culture

Not enough information: official sources cover less than 60% of this area.

  • Not enough information: Not enough information: official sources do not document this, so it is left out of the grade rather than counted as a no.
    RetreatsNot enough information: not found in official sources.
  • Not enough information: Not enough information: official sources do not document this, so it is left out of the grade rather than counted as a no.
    Campus ministry staffNot enough information: not found in official sources.
  • Not enough information: Not enough information: official sources do not document this, so it is left out of the grade rather than counted as a no.
    Faith-based student groups or clubsNot enough information: not found in official sources.
  • Not enough information: Not enough information: official sources do not document this, so it is left out of the grade rather than counted as a no.
    Daily prayer and liturgical life built into the school dayNot enough information: not found in official sources.
N/AService and Catholic social teaching: Not enough information. Official sources do not cover enough of this to grade it yet.

Service and Catholic social teaching

Not enough information: official sources cover less than 60% of this area.

  • Not enough information: Not enough information: official sources do not document this, so it is left out of the grade rather than counted as a no.
    Required service hoursNot enough information: not found in official sources.
  • Not enough information: Not enough information: official sources do not document this, so it is left out of the grade rather than counted as a no.
    Catholic social teaching taught in theology coursesNot enough information: not found in official sources.
  • Not enough information: Not enough information: official sources do not document this, so it is left out of the grade rather than counted as a no.
    Pro-life engagement (club, March for Life, or similar)Not enough information: not found in official sources.
  • Not enough information: Not enough information: official sources do not document this, so it is left out of the grade rather than counted as a no.
    Justice and solidarity programs (immersions, service trips, justice clubs)Not enough information: not found in official sources.

Grades come from the documented indicators under the published rubric. “Not enough information” does not mean the school lacks it.

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Academic Excellence

BAcademic Excellence: Good (grade B): 70 to 100 points out of 100 on what official sources document. Grades need sources for at least 60% of the checklist.
80 of 100
From federal data, on fixed published scales.

Each measure counts for the share shown.

  • Graduates going to four-year colleges 75% of scoreThis measure counts for 75% of the Academic Excellence score.99%
  • Students per teacher 25% of scoreThis measure counts for 25% of the Academic Excellence score.16.6 to 1

Bars show points on each measure’s scale. How Academic Excellence is computed. Federal data on private high schools is limited to these two measures.

Source: NCES Private School Survey (2023–24 school year)

School facts

TypeDiocesan school
DioceseCatholic Diocese of Wilmington, DE
Grades9–12
Students (all grades)829
Students in grades 9–12829
Coed or single-sexCoed
Student–teacher ratio16.6 to 1
Graduates going to 4-year colleges99%
SettingSuburb

Source: NCES Private School Survey 23-24 public-use file (school year 2023–24). The college-going rate and student–teacher ratio feed Academic Excellence; nothing here changes the faith grades.

Local Church

Catholic Diocese of Wilmington

The Most Reverend William E. Koenig, Bishop of Wilmington

Formal address: “Your Excellency”

Source: cdow.org, cdow.org, verified Oct. 7, 2026.

About this school’s data

Questions families ask

Is St. Mark's High School a Catholic high school?
Yes. St. Mark's High School is a Catholic high school in the Catholic Diocese of Wilmington.

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