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John Walsh
Athletic Director
Head Football Coach
John Walsh will be starting his 31st year in education and coaching,19 of those years as the head football coach. Coach Walsh has lead his teams to the playoffs 14 of those 19 years. Of those 14 years his teams reached the semifinals 6 times, coached in 4 State Championship games and won of 2 them. Coach Walsh is married to Amber (Goodnight Middle School girls coordinator, and has 3 children - JW Walsh 32 (who played QB for him and lead them to thier first state title game) coaches football at his alma mater Oklahome State. Sami Walsh 25 (graduate from the University of Arkansas) lives in the Dallas business world. Maggie Walsh 21 (San Marcos HS graduate) plays volleyball at Texas State University. Rattler Up Baby, Let's Go!
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Bryan Webb
Baseball Head Coach
Varsity Football Assistant Coach
This is my 13th year at SMHS. Overall I have 21 years of experience (19 as head coach). I have been married to wife Britney for 19 years and have 3 sons (Gunner, Kannon, and Kutter Gage) that all attend San Marcos schools. Go Rattlers!
Phone: 512-749-1978
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B.S. Exercise and Sports Science Texas State University M.Ed Lamar University
Mr. David Ryan Sambrano
9th Grade FootballHead Coach
Boys Track Assistant Coach
David-Ryan Sambrano was born and raised in San Marcos Texas. He was also a 2010 graduate of San Marcos HS. After high school, Coach Sambrano graduated from Texas State University, and in 2024 he completed his Master's Degree from Lamar University. This is his 7th year in the district and 10th year in education. His biggest fans are his amazing Wife Daniela, and his parents David and Angela Sambrano.
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B.S Science in Exercise Physiology M.Ed Secondary Education
Mr. Kristian Cogdill
Varsity Football Assistant Coach
Baseball Assistant Coach
Kristian Cogdill was born and raised in San Marcos, TX and is a 2010 graduate of San Marcos HS. After high school he played football at The College of St. Scholastica in Duluth, MN. After graduating from St. Scholastica he went to Texas State University for his Masters degree in Secondary Education. This is his 9th year in the district and 8th year at San Marcos HS.
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Josh Allen
Varsity Football Defensive Coordinator
Powerlifting Assistant Coach
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Conrado Reyes
Boys Soccer Head Coach
Football Assistant Coach
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Jonathan Rodriguez
Football Assistant Coach
Baseball Assistant Coach
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Jordan Wallace
Football Assistant Coach
Boys Soccer Assistant Coach
Head Strength and Conditioning Coach
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E.J. Mungia
Golf Head Coach
Football Assistant Coach
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Colby Vidrine
Football Assistant Coach
Track & Field Assistant Coach
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Jeremy Gonzalez
Football Assistant Coach
Baseball Assistant Coach
