2015-2016 Leadership Team

Dr. Robert Butz grew up in Cape Coral and is a graduate of Mariner High School – Class of ‘93. He received a football scholarship to Liberty University where he obtained his undergraduate degree in Social Science. After graduating from Liberty University, Dr. Butz coached three years of college football then returned to Mariner to pursue a career in education. He spent eight years in the classroom teaching Psychology, Economics, and American History. While teaching at Mariner, he had the opportunity to be the head football coach for six years, taking the football team to the playoffs for two of those years. In 2012 Dr. Butz became principal at Mariner High School.
Mrs. Beth Gedde is originally from Southern New Jersey. She received her Bachelors Degree in Economics from Rutgers University and received her Masters in Educational Leadership from Florida Gulf Coast University. She started teaching at Mariner in 2005 in the Reading and Business Departments, before becoming Assistant Principal in 2014. While teaching, she coached volleyball, soccer, and softball, as well as co-sponsored the National Technical Honor Society. She also co-sponsored the Class of 2013 for four years. Her primary responsibilities at Mariner High include transportation, technology, academies, and student discipline. 


Darya Grote was born in Vietnam and was adopted when she was 5 months old. She grew up as an Army brat and spent most of her school years overseas in Germany. She completed her first two years of college in Germany and moved to Florida to finish her Bachelors at the University of South Florida. She received her Master’s in Educational Leadership in 2009. Ms. Grote taught for 13 years in high school and middle school with English and Language Arts being her forté. During that time, she also coached, sponsored yearbook, and taught journalism and TV production. In 2011, she became Assistant Principal at ALC/LAMP. She joined the Administration team at MHS in 2012. Her primary responsibilities include discipline, athletics, ESOL, assemblies, and most importantly, ensuring student learning.
Dr. Thomas Michel attended and earned the following degrees: BS. Education 1996 Kent State University / M.S. Ed Leadership 2001 Nova Southeastern University / Doctorate Education 2006 Nova Southeastern University. He started his teaching career in 1996 at Punta Gorda Middle School in Charlotte County. During his time there, he taught 6th-8th grade Dropout prevention classes, facilitated the yearbook and television studio and coached boy’s volleyball. In 2003, he started working in Lee County at Diplomat Middle School where he taught 8th grade U.S. History and FCAT Prep. In 2004, he began teaching evening classes at Edison State College where he still teaches today. He became an administrator in 2004 and held the Assistant Principal position at Gateway Charter High School from 2004-2005. In 2005, he started as Assistant Principal here at Mariner High School. At MHS, he is primarily responsible for facilities, school safety and student discipline. He is the youngest of ten children and 3 of his siblings hold a career in education.
Mrs. Roberta White was born in Tennessee and lived in many states since her father was in the Marines. Mrs. White ended up going to high school and college in Virginia. She received her Bachelors in Family and Child Development from Virginia Polytechnic Institute and State University otherwise known as Virginia Tech. She received her Masters in Educational Leadership from Northern Arizona University. She taught for ten years in elementary, middle, and high school. She became an assistant principal in 2005 at Caloosa Middle School. She transferred to Mariner High in April of 2012. Her primary responsibilities at Mariner include curriculum, school improvement, Title II, scheduling, and professional development.