St. Mark's High School

Saint Mark's High School is a coeducational Roman Catholic high school located at 2501 Pike Creek Road, in unincorporated New Castle County, Delaware, with a Wilmington postal address.^[2] The school is administrated by the Roman Catholic Diocese of Wilmington. It is accredited by the Middle States Association of Colleges and Schools.

Saint Mark's High School
Address
2501 Pike Creek Road Wilmington , New Castle County , Delaware 19808 United States
Coordinates	39.7179°N 75.6893°W / 39.7179; -75.6893
Information
Type	Private, coeducational, Diocesan
Religious affiliation(s)	Roman Catholic (School Sisters of Notre Dame, Sisters, Servants of the Immaculate Heart of Mary)
Established	1969 (56 years ago) (1969)
Status	Open
Oversight	Diocese of Wilmington
CEEB code	080194
President	Patrick Tiernan
Dean	Robert Megearle
Principal	Eileen Wilkinson Ed.D
Grades	9–12
Enrollment	1020 students
Average class size	20 students
Student to teacher ratio	11 students: 1 teacher
Color(s)	Dark green, gold, white
Slogan	All Things Possible
Athletics	www.spartanssports.com
Mascot	Markus (Spartan)
Nickname	Saint Mark's
Team name	Spartans
Rival	Salesianum
Accreditation	Middle States Association of Colleges and Schools[1]
Yearbook	Spark
Tuition	$16,600
Nobel laureates	1
Website	www.stmarkshs.net

Notable alumni

• Nicole Bosso, former Miss Delaware USA
• John Carney, Mayor of Wilmington (2025-Present), Governor of Delaware (2017–2025), former U.S. Representative from Delaware (2011-2017) and former Lieutenant Governor of Delaware (2001–2009)
• Louis Carlet, union organizer
• Tom Douglas, Seattle chef and restaurateur
• Kevin Mench, retired Major League Baseball player.
• Mario Pino, horse racing jockey
• David Plouffe, campaign manager for Barack Obama
• Keith Powell, television actor
• Pedro Swann, former MLB player
• Steve Watson, NFL wide receiver