About Us

Sierra Butler serves as Tipton Prevents’ Vice Chair. Sierra grew up in middle Tennessee and attended college at the University of Tennessee at Chattanooga where she obtained a bachelor’s and master’s degree in Criminal Justice. Sierra is a Certified Prevention Specialist II and works as the project manager at Baptist Tipton over the West Tennessee Addiction Network grant and Baptist’s Center of Excellence in Addiction Medicine. The grant focuses on opioid prevention, treatment, and recovery efforts and bringing more resources to rural West TN for families in need.

Sierra has been married to her husband Matt for over 10 years, and they reside in Covington, Tennessee with their three children Braylee, Zayden, and Cohen.

Sherronda Thomas serves as Tipton Prevents’ Vice Chair. Sherronda is currently a fifth year assistant principal. She has been in education and employed with Tipton County Schools for 22 years. Sherronda started with Tipton County Schools in September of 2002. Her career journey began as a paraprofessional/bus driver for Tipton County Preschool, a Special Education teacher for CIAA, now known as Charger Academy, a teacher for the Teen Learning Center, and currently Brighton Middle School assistant principal.

Sherronda is a proud mother and wife. She enjoys family time, traveling, and sports. Sherronda received her bachelor’s and master’s degrees from the University of Memphis and an Ed.S in Leadership from Arkansas State University.

William Beasley serves as Tipton Prevents’ Treasurer. Will is a 2018 graduate of Brighton High School. He later earned his bachelor’s degree in Business Administration with a major in Finance from the University of Memphis. Will is now in his third year with Tipton County Schools, currently serving as the Financial Controller.

Will and his wife, Rebecka, have been married for three years, and both have been lifelong residents of Tipton County.

Dorothy Isbell serves as Tipton Prevents’ Chair. Dorothy graduated from Munford High School in 2007. She then went on to the University of Memphis where she graduated with a B.S. in Sports and Leisure Management. She has worked in the Parks and Recreation field since she was fifteen. She was a Sports Coordinator for the City of Munford starting at nineteen for 10 years. In 2019, she became the Director of Parks and Recreation for the Town of Atoka and currently presides there. In her four years thus far, her team has grown Atoka Parks and Recreation substantially between events, sports, and other activities. Her passion is to work within the community she lives in and to provide quality leisure activities for the whole family to enjoy.

Dorothy has been married to her husband Kyle for 12 years, and they reside in Atoka with their two children, Darcie and Joel. In her free time, she likes to read, watch her kids play their sports, and spend time with family.

Chris Williams was born in Memphis, TN and lived in Tipton County during his childhood. When he was 8 years old, he moved to Peachtree City, Georgia until graduating high school. Chris then joined the United States Army. After leaving the Army, Chris began his career at the Tipton County Sheriff’s Office in July of 2000. Chris has been assigned to numerous divisions including the Reserve Division, Patrol, Field Training Officer, SWAT, the General Investigations Bureau, Narcotics, Corrections and Administration. Chris currently holds the rank of Chief Deputy of the Tipton County Sheriff’s Office and serves as the Personnel Officer for the Agency as well as supervising the Tipton County Correctional Facility, the fleet vehicles, the Reserve Division, the grounds, and the overall budget of the Sheriff’s Office which is approximately 14 million dollars annually. Chris has been married to his wife, Rachel, for 25 years, and they have two children. Ayden, 22, graduated from Munford High School in 2021 and TCAT in Covington in 2023. His second child is Mia, 19, who graduated from Munford High School in 2024 and will soon be graduating from Dyersburg State Community College in Covington as a Paramedic. Rachel currently serves as a police officer for the Atoka Police Department and has approximately 21 years in law enforcement. Chris and Rachel currently reside in Munford, Tennessee.

Robin Racine is Tipton Prevents’ Director. Robin helps guide the development and implementation of Tipton Prevents’ mission. With over thirteen years of experience working in the field of prevention, she has led the coalition from its beginning stages to an active coalition that engages the community in prevention. Robin received her Bachelor of Science in Social Work from Harding University. She is a Certified Prevention Specialist II, a graduate from the CADCA National Coalition Institute, and a certified coalition business administrator. Robin has been married to Mike for 40 years, has two sons, two beautiful daughters-in-law, and six precious grandchildren.

Sarah Elizabeth “Sis” Poston is the Associate Director for Tipton Prevents. Sis Poston was born and raised in Tipton County. She is a 2010 graduate of Covington High School. She earned her bachelor’s degree in Child and Family Studies from Freed-Hardeman University, where she also played softball and has since been inducted into FHU’s Sports Hall of Fame. Sis then earned her master’s degree in Instruction and Curriculum Leadership from the University of Memphis and an ESL endorsement from the University of Tennessee-Martin. Sis is a Certified Prevention Specialist and a certified coalition business administrator. With past experience as a teacher and coach, she continues to love working with the youth of Tipton County and educating on the value of being drug free.

Sis is married to Graham Poston, and they have a son, Pace.

Bailey Daniel is the Project Coordinator for Tipton Prevents. A Tipton County native and Brighton High School graduate, Bailey brings both a strong local connection and passion for serving her community. She earned her bachelor’s degree in Special Education from Mississippi State University and her master’s degree in Literacy from the University of Tennessee at Martin. With previous experience as a high school teacher and coach, Bailey brings valuable skills, dedication, and leadership to our team.

Bailey is married to Alex Daniel. They reside in Covington with their 6-month-old daughter, Amelia.