Our Team

Circle City Prep’s Founding Team consists of stakeholders with diverse professional expertise and multiple ties to the Indianapolis community. All members are united by Circle City Prep’s mission to provide K-8 students a rigorous and joyful college prep education.


Board Chair & Founding Board Member, Jennifer Bartenbach is Chief Financial Officer at Central Indiana Community Foundation, Inc. and leads the fiscal oversight, regulatory compliance, and operational effectiveness of CICF’s $720 million in assets. Managing operations, IT, and HR, she has a history of working with nonprofits; prior to CICF, she worked at the Indianapolis Museum of Art, including serving as CFO. She also served as interim CEO while a national search was conducted, placed in this role through a unanimous vote by the senior leadership team and Board of Directors.  This role afforded her the unique opportunity to oversee areas such as HR, Finance, Security, Facilities, and IT, and to have a meaningful impact on every program and department. Mrs. Bartenbach brings deep finance, human resources, strategic planning, and innovative ideas to the Board.


Founding Board Member, Aaron Berkey is a Business Development Director at Torchlite Marketing and brings experience in software and digital marketing and thought leadership in digital marketing technology, consulting with and developing the accounts of Fortune 100 businesses and speaking at national events on the digital marketing industry. After moving to Indianapolis, he extended his philanthropic involvement to reach many local not-for-profits and NGOs, including leadership work at Habitat for Humanity, The Center for the Performing Arts, and Young Professionals of Central Indiana. Committed to quality public education for all children, Mr. Berkey brings expertise in the marketing and technology industry, governance, strategic planning, and community connections to the Board.


Board Treasurer & Founding Board Member, Sharnell J. Johnson is the Director of Finance at Ivy Tech Community College – Central Indiana Region and manages the college’s expenditures budget, grants, and fixed assets. A graduate of the Diversity Leadership Academy of Greater Indianapolis and United Way’s Leadership United, she has served on the Executive Board of Directors for National Coalition of 100 Black Women, United Northwest Area Development Corporation, and the Madame Walker Theatre Center. Recognized by the Indianapolis Star, Center for Leadership Development, Indy’s Best & Brightest, The Tom Joyner Morning Show, and WRTV 6 as an Up & Coming community leader, she serves on the Near North Development Corporation Board of Directors and is participant in the Class XL of the Stanley K. Lacy Executive Leadership Series®. Ms. Johnson brings finance, nonprofit management, governance, and community development expertise to the Board.


Board Secretary & Founding Board Member, Chad Miller is an Insurance Broker at Miller Insurance Group and served the youth of Indianapolis as an educator at Indianapolis Metropolitan High School for six years prior to moving to Miller Insurance Group. As a teacher, he was voted by students and staff as “Teacher of the Year” in 2010. As Assistant Principal, he helped guide Indianapolis Met to raising its school accountability grade by two letter grades; as Principal, he created an innovative character development system, the Career Readiness Grade, which reduced expulsions by 85% and suspensions by 40%. He has served on the Butler University Young Alumni Board and Teach For America – Indianapolis Alumni Board. Mr. Miller brings educational leadership, strategic planning, teacher development, data analysis, and school governance to the Board.


Vice Board Chair & Founding Board Member, Michael Nagel is a Web and Social Media Manage at Cummins Inc. and has more than 10 years of experience in marketing and corporate communications, developing external social and digital media strategies. Responsible for managing Cummins’ corporate web and social media presence, he leads digital efforts to promote the company’s accomplishments in the areas of corporate responsibility, diversity, sustainability, product innovation, and health and safety. Mr. Nagel participates in the company’s Leaping for Reading program and has provided skills-based volunteerism to Lemonade Day Indy. Prior to joining Cummins, he was a legal marketer for six and a half years at Barnes & Thornburg LLP, an Am Law 100 law firm. Mr. Nagel brings marketing and branding as well as deep connections to the Indianapolis community to the Board.


Founding Board Member, Mandy Parris is an Executive Director of commercial banking for JPMorgan Chase Bank, NA and provides financing and banking services for companies that are headquartered in Indiana with locations around the world. She also co-leads the firm’s commercial banking analyst program for the Midwest segment.  Mandy is a graduate of the 2015-2016 class of the Stanley K. Lacy Executive Leadership Series (SKL), and a 2011 graduate of the United Way of Central Indiana Leadership United series. Mandy is on the board of directors for Girls Incorporated of Greater Indianapolis, and is a member of the Executive Committee in her role as the Treasurer. She helped launch Executive Women in Finance in 2015 and is currently serving as Vice President. She brings a diverse background in working with many different industries, operating through significant challenges, as well as helping clients develop plans to achieve their goals.


Founding Board Member, Doris Tolliver is the a Senior Fellow of Child Welfare Strategy Group at Annie E. Casey Foundation and is a strategic thinker specializing in organizational effectiveness, change management, and business strategy development. Formally, as the Chief of Staff for the Indiana Department of Child Services, she transformed the organizational structure and culture to integrate outcomes, technology, and strategic planning at the organization and program levels. Ms. Tolliver’s background in child welfare, human resources, and law aide her in supporting the Agency Director in leading a 4,000 employee team and serving Indiana’s youth. A licensed attorney in Indiana, Mrs. Tolliver brings extensive human resource, strategic planning, and change management experience alongside legal and nonprofit management expertise to the Board.