Administrative Team
Mrs. Jill Mullen is in her nineteenth year as lead principal of SVMS, twenty fourth year in Liberty, and twenty-seventh year in education. She started her teaching career in Liberty in the fall of 2000 as a sixth grade math teacher, and she taught math for four years at the middle level. While teaching, Mrs. Mullen was also the Liberty High School Head Varsity Volleyball Coach for two years. Her administrative career started at SVMS where she was the assistant principal during the 2004-2005 school year.
In 2005, Mrs. Mullen returned to her home state of Wisconsin where she served as an associate principal at Greendale Middle School in the Greendale School District in Greendale, Wisconsin, from 2005-2008. She returned to the Liberty School District in August of 2008.
She holds a Bachelor of Arts in Elementary Education from The University of Iowa, a Master of Science in Educational Leadership from Northwest Missouri State University, and a Specialist in Education Degree from Northwest Missouri State University in The Superintendency. When at the University of Iowa, Ms. Mullen was a 4-year letter winner with the University of Iowa Women’s Volleyball Team.
Mrs. Mullen has a passion for the middle level learner and has spent her entire career at the middle level. She loves seeing the growth that students make socially, emotionally, and academically during this time frame. She loves seeing students and teachers succeed in all that they do.
Mrs. Mullen enjoys spending time with her husband and three children, and has been thrilled to see the love for learning in her own children. Her oldest daughter just finished her athletic and academic careers at UCLA & NC State. Her youngest daughter is a student at USC and a member of the women’s volleyball team. Her son is in middle school. In her free time, she likes to spend time with her family, watch her daughter play college volleyball and son play football and basketball, exercise, watch sports of any kind, read, listen to music, travel, and continue in her own learning in the area of leadership and the middle school child.
Awards/Accolades/Membership:
2025 Distinguished Service Award, SVMS PTSA/LPS PTSA Council
2021 Distinguished Service Award, SVMS PTSA/LPS PTSA Council
2017 Received a LPS S.O.A.R. Award
2016 Completed The National Institute for School Leaders Institute Executive Development Program
2011 Greater Kansas City Metro Principal Association: Middle School Principal of the Year
2011 Office of the Secretary of Defense, Employee Support of the Guard and Reserve: Patriotic Employer
Member of ASCD, NASSP, MASSP, and GKCMPA
Mrs. Jennifer Selock is an experienced and student-centered educational leader, currently in her tenth year as an assistant principal. With a proven track record in best instructional practices, positive relationship building, and innovative ideas, Mrs. Selock brings a comprehensive understanding of the multifaceted responsibilities involved in school leadership.
Her career began in 2002 in the North Kansas City School District, and she joined Liberty Public Schools in 2014, with teaching experience at both the elementary and middle levels. In 2015, she taught the Missouri Option Program and served as the Academic and Behavioral Interventionist at Liberty Academy. Mrs. Selock commenced her administrative journey in 2017 as a traveling assistant principal for Shoal Creek Elementary and Heritage Middle School. She holds an Educational Specialist in Superintendency and a Master of Science in Educational Leadership from Northwest Missouri State University.
Committed to cultivating a community for academic and social growth through mentorship and collaboration with students, families, and staff, Mrs. Selock actively seeks opportunities to grow others in the profession. She fosters a reflective culture centered on best practices, instructional goals, and positive learning outcomes through effective two-way communication and feedback. Her dedication lies in working with diverse learners, supporting classroom instruction and intervention to increase student achievement, with a strong focus on data-driven decision-making to address the individual learning needs of all students.
Outside of her professional life, Mrs. Selock cherishes time with her family. She has been married for 27 years to her husband, Scott, a retired KCPD Sergeant. They have three children: Jacob, an EMT; Tyler, who will be joining KCPD this fall; and Megan, who attends the University of Lincoln, Nebraska, studying advertising and marketing. Jennifer’s hobbies include spending time outdoors, walking, reading, and working in her garden and flower beds at home, and her newfound passion for genealogy.
Awards and Recognition:
- 2016-17 Teacher of the Year
- 2007 Teacher of Excellence
- 2006 Teacher of Character
- 2013 Recipient of Donor’s Choose Grant
- 2006 Recipient of a Sprint Grant
- 2006 Recipient of a Mimio Grant
Mr. Devin Springer is beginning his first year as an assistant principal at South Valley Middle School and his fourteenth year in education. He began his teaching career in 2013 as an eighth-grade English Language Arts teacher at Platte City Middle School before joining Liberty Public Schools in 2017. During his time in the district, he taught English Language Arts at both South Valley Middle School and Discovery Middle School. Beyond the classroom, Mr. Springer has served as an assistant soccer coach at Liberty High School since 2013, where he has enjoyed mentoring student-athletes and building meaningful relationships.
Mr. Springer earned a Bachelor of Science in English Secondary Education from Missouri State University and a Master of Education in Secondary Administration from William Woods University. While attending North Central College in Naperville, Illinois, he was a member of the men's soccer team and was recognized as an Academic All-CCIW Conference selection.
Throughout his career, Mr. Springer has been passionate about fostering a positive school culture and creating opportunities for every student to succeed. He has served in several leadership roles, including Where Everybody Belongs (W.E.B.) Coordinator, PBIS Team Facilitator, and Student Positive Culture Team Lead. He is passionate about using academic and behavioral data to partner with students, staff, and families to support student growth. Nothing is more rewarding than watching students develop socially, emotionally, and academically while building the confidence and skills they need for future success.
Outside of school, Mr. Springer enjoys spending time with his wife, Ashley, and their two children, Brendan and Evelyn. Ashley also works in Liberty Public Schools as a school counselor at Discovery Middle School. In his free time, he enjoys watching sports, reading, and spending time at the lake.
Awards and Recognition:
- 2026-2027 Discovery Middle School Teacher of the Year