Alumni Association

Alumni Leadership Speaker Series

The Alumni Association’s Leadership Speaker Series aims to provide Marksmen with lifelong learning opportunities, hearing from guest speakers in a variety of fields and interests. Each year, Marksmen gather at incredible venues across Dallas to hear from distinguished speakers across diverse fields, from sports and science to business and barbeque. 

An Evening with Sam Acho ’07 and Taylor Jenkins ’03


The Alumni Association welcomed three guest speakers who have been many things throughout their careers – Grizzlies, Longhorns, Cowboys – but they will always be Lions at heart. The 2025 Alumni Leadership Speaker Series featured current and former professional athletes and coaches who discussed the lasting impact of St. Mark’s, sports, and the qualities that form a good man.  
 
The panel included: 
  • Sam Acho ’07, ESPN analyst and a former NFL linebacker 
  • Taylor Jenkins ’03, NBA Head Coach of the Memphis Grizzlies 
  • Sean Lissemore, St. Mark’s Athletic Director and a former NFL defensive end 
 
The panel was moderated by Scott Jolly, Assistant Headmaster for External Affairs and a former St. Mark’s basketball coach – who also coached Acho and Jenkins as students.

Past ALSS Speakers Include

  • Lee Trevino, professional golfer and father of Daniel ’11
  • Ross Perot, Jr. ’77, Chairman of The Perot Companies and Hillwood
  • Robert Decherd ’69, Former Chairman, President, and CEO of Belo Corporation
  • Clark Hunt ’83, Co-Owner of Kansas City Chiefs and FC Dallas
  • Mark Cuban, Entrepreneur and Owner of the Dallas Mavericks
  • Ken Hersh ’81, President and CEO of the George W. Bush Presidential Center
  • Dr. Beck Weathers, Survivor of the 1996 Mount Everest Disaster 
  • Richard W. Fisher, President and CEO of the Dallas Fed 
  • Scott Gottlich ’94, Owner and Chef of 18th & Vine BBQ
  • Dr. David Vanderpool ’78, CEO and Founder at LiveBeyond
  • Matt Osborne ’90, Director of International Operations at Operation Underground Railroad

St. Mark’s School of Texas

10600 Preston Road
Dallas, Texas 75230
214-346-8000

About Us

St. Mark’s School of Texas is a private, nonsectarian college-preparatory boys’ day school for students in grades 1 through 12, located in Dallas, Texas. St. Mark’s aims to prepare young men to assume leadership and responsibility in a competitive and changing world.

St. Mark’s does not discriminate in the administration of its admission and education policies on the basis of race, color, religion, sexual orientation, or national or ethnic origin.