2025-27 Board of Trustees

Adrienne Rall is a life member of the Theta Mu Chapter at the University of Nebraska at Kearney. She served as the 38th National President of Tau Beta Sigma from 2019-2021, presiding over the 2021 National Convention in Grand Rapids, Michigan. As National President, Adrienne guided the Sorority through unprecedented times as the COVID-19 Pandemic swept across the globe. Alongside an incredible National Leadership Team, she assisted Chapters and Districts as they pivoted all of their operations and programming to an entirely virtual format, learning to serve their bands and communities in new, unique ways.

Adrienne earned a Bachelor of Arts Degree in Music with a minor in psychology from the University of Nebraska at Kearney in 2006. Throughout her undergraduate career, she played both flute and piccolo in many musical ensembles including the Kearney Area Flute Choir, the UNK Wind Ensemble, and the UNK Symphonic Band. She also participated in the University of Nebraska at Kearney’s Pride of the Plains Marching Band as both a member and two-time captain of the UNK Color Guard.

As an Active member of the Sorority, Adrienne held many leadership positions in her chapter, including two terms as Chapter President. After graduation, she became involved in the Midwest District Alumni Association, serving one term on the steering committee and two terms as Vice President of Programs. In April 2010, Adrienne became the Midwest District Counselor, holding this position until she was appointed National Vice President for Communication and Recognition in 2015. Adrienne subsequently served as National Vice President for Special Projects from 2015-2017 and as National Vice President for Colonization and Membership from 2017-2019. During her tenure on National Council, Adrienne diligently worked on the creation of both the National Program, Coda, as well as the National Curriculum, Overture.

Currently, Adrienne lives in Kearney, Nebraska, with her husband, three children, and two cats. She enjoys working as a color guard choreographer and coach for several area high schools as well as the University of Nebraska at Kearney, as it gives her the opportunity to teach and interact with young people in her community.

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Jonathan L. Markowski currently works as the Acting Director of Finance for the Child Support Enforcement division of the Department of Revenue for the Commonwealth of Massachusetts. He is a Certified Government Auditing Professional (CGAP) and Certified Fraud Examiner (CFE). He earned a Master of Science degree in Management with an Accounting concentration from Bridgewater State College and completed his undergraduate degree at the University of Massachusetts, where he was a featured rifle soloist with the “Power and Class of New England” Minuteman Marching Band. Jonathan previously worked as an Audit Support Manager at the Office of the State Auditor, as an auditor with the Defense Contract Audit Agency, and as a teacher of high school mathematics.

Jonathan served as the 37th National President of Tau Beta Sigma and presided over the convention at Oklahoma State University in 2019. A Life member of the Delta Delta Chapter, Jonathan was initiated in the Fall semester of 1996 and served in various chapter and district leadership roles in his time as an Active member. He was elected to the National Council in 2011 and subsequently each of the elected National Vice-Presidencies. As NVPSP, he originated the “Focus on Five” Campaign.

Jonathan is originally from and still resides in the suburbs of Boston, Massachusetts. He coaches the East Bridgewater Jr./Sr. High School Viking Marching Band and Color Guard and plays the oboe in the Abington Community Band.

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Jason Dornbush is a Project Manager for CPM Americas in Waterloo, Iowa, with over 12 years of experience in project management, nonprofit leadership, and exhibit development. Known as a detail-oriented leader and collaborative problem-solver, Jason brings a unique blend of technical expertise, creative vision, and relationship-building skills to every project.

Jason’s career spans internationally recognized museums, nonprofit organizations, and custom fabrication firms. At the Museum of Science and Industry in Chicago, he served as a Robot Specialist for the nationally touring Robot Revolution exhibition, overseeing installation and maintenance of more than 40 interactive robots, developing preventative maintenance plans, and ensuring smooth operation at venues across the country. As Science Outreach Coordinator for the Grout Museum District in Waterloo, Iowa, he designed and delivered hands-on STEM programs, forged community partnerships, and secured grant-funded initiatives to expand science education.

In the private sector, Jason has led large-scale projects managing budgets over $5,000,000.00, directing multidisciplinary teams, and ensuring on-time, on-budget delivery for museum, corporate, and custom fabrication clients. He has also contributed to social impact initiatives, serving as Permanent Supportive Housing & Project Manager for the Muscatine Center for Social Action, where he oversaw strategic projects and housing services for individuals experiencing homelessness.

Jason is a Life Member of the Zeta Nu Chapter of Tau Beta Sigma at the University of Northern Iowa and remains deeply committed to community engagement and organizational excellence.

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Dr. McCadden is a Life Member of Tau Beta Sigma (Eta Sigma) and Kappa Kappa Psi (Iota Delta). He earned undergraduate and graduate degrees at Towson University, and a Doctor of Education degree at Pennsylvania State University. He is a Professor of Behavioral Sciences and Program Director for the Human Services, Counseling, and Social Work programs at Community College of Baltimore County.

Ted is a licensed counselor and is active as a researcher and consultant in both counseling and education. He is an honorary member of Phi Theta Kappa National Honor Society and Tri-M National Music Honor Society. In his spare time, he raises chickens and bees in his backyard garden.

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Rosalyn McDonald is a charter member of Tau Beta Sigma National Honorary Band Sorority, Inc., Theta Phi Chapter, initiated at Hampton University on June 26, 1999. During her time at Hampton, she was a member of the Flag Team for the Hampton University Marching Force (1995–1998) and played clarinet with the Hampton University Concert Band (1995–1999). She earned a bachelor’s degree in business management, later obtaining a second bachelor’s degree (2001), a Master of Business Administration (2004), and a Master Compliance Administrator Certification (2008).

Following graduation, Ms. McDonald became a Life Member of Tau Beta Sigma (1999) and has maintained active involvement with the organization. Her leadership roles include service as a member of the Tau Beta Sigma Alumni Association (2002–present), President of the Theta Phi Local Alumni Association (2006–2007), Advisor to the Iota Iota Chapter (2007–2008), and Chapter Visitation Assistant for the Southwest District (2015–2023). She recently served as Chairperson of the Tau Beta Sigma Board of Trustees (2023–2025). She has also been honored as an Honorary Member of the Tau Chapter (2017) and the Southwest District Chapter (2018) of Tau Beta Sigma, as well as an Honorary Member of Kappa Kappa Psi National Honorary Band Fraternity and also became a Life member in (2021).

Professionally, Ms. McDonald is a Procurement Manager with North Tarrant Infrastructure, LLC in Fort Worth, Texas. In this role, she manages the solicitation, evaluation, and execution of contracts, change orders and amendments for the supplies, materials, subconsultants, and subcontractors in support of the design and construction of major highway projects across North Texas.

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Zack Rebarchek was initiated into the Zeta Delta Chapter of Tau Beta Sigma at the University of Kansas in 2008. As an active member of the organization, he served in leadership roles including chapter Treasurer, Liaison, Vice President for Membership, President, Midwest District Vice President for Special Projects, and MWD President. Zack was a low brass drill instructor and baritone section leader for the Marching Jayhawks. In 2012 he earned a Bachelors of Science in Business Administration with a concentration in Entrepreneurship and Technical Communications. Zack stayed active within Tau Beta Sigma by serving in leadership roles within the MWD Alumni Association and serving on the National CFR Committee. Zack also served as MWD Counselor from 2015-2022. Zack maintains active memberships in TBSAA and KKPsiAA and is an Honorary Life Member of TBS and KKPsi.

Professionally, Zack works at AT&T as a Senior Specialist Sales Event Lead managing event presence, training, and marketing events for sales teams in Minnesota and Wisconsin.

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Leslie was initiated in the Zeta Nu chapter at the University of Northern Iowa, and served in various chapter leadership roles, such as Ritualist, Secretary, and President. On the district level, Leslie served as Sec/Treas for one year, and Vice President of Membership for one year.

Upon graduation with her Music Education and French Horn Performance degrees, Leslie was actively involved in the Midwest District Alumni Association, serving as president for three years. In 2011, was appointed Finance Chair for the Tau Beta Sigma Alumni Association Executive Committee, a role in which she served until her appointment to the District.

In “real life,” Leslie is the K-6 General Music, Instrumental Music, ESL and TAG Coordinator for the GMG Community School District in Garwin, Iowa. She keeps busy in the school with music classes, Talented & Gifted classes, beginning band and lessons, as well as serving as coach for the Junior and Regular Robotics leagues at her school, in addition to serving as the District Union President. She received her Master’s degree in TESOL studies from Drake University in 2013. She lives in Marshalltown, Iowa, with her husband, Justin, a computer engineer, and their dog, Charlotte. Their free time activities include camping, fishing, and home improvement projects that last forever.

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Allison is a Life Member of the Eta Gamma Chapter of Tau Beta Sigma at Boston University. She graduated with a Bachelor of Arts degree in Philosophy with a minor in Public Health in 2012 and a Master of Public Health degree in Global Health in 2014 from the Boston University School of Public Health. While at Boston University, Allison was an active member of the Concert, Pep, and Marching Bands, performing on bass clarinet and alto saxophone, and served as Drum Major of the Boston University Marching Band her senior year. As a student leader, Allison served at the Chapter and District levels, including as Northeast District Vice President for Special Projects (2011–2012) and District President (2012–2013). 

After graduation, Allison served as Northeast District Counselor (2015–2021) before being elected to the National Council. She has since served as Vice President for Communication & Recognition (2021–2023), Vice President for Special Projects (2023–2024), and Vice President for Membership & Expansion (2024–2025). In these roles, she has strengthened the Sorority’s communications and recognition efforts, expanded engagement with National Programs and the Sorority Mission via the Focus on Five Campaign, and guided membership and Chapter growth through updated education resources, streamlined expansion processes, and sustainable support strategies. She began her term as National President in July 2025.

Professionally, Allison serves as Director of Clinical Information Managers (CIMs) at Envision Healthcare, where she oversees operations, leads technology integration projects including AI-based documentation platforms, and supports leadership development of the more than 300 team members in her department. With over 15 years of experience in healthcare management and a professional certification in Organization Development, she specializes in guiding organizations through complex systems, fostering team growth, and leading sustainable change. She is an active member of the American Public Health Association and the Organization Development Network.

In her free time, Allison enjoys traveling and exploring new places, attending live music performances, creating with pottery, spending time at the beach, listening to audiobooks and podcasts, and being with family and friends.

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