Our Team

Jennifer Holladay – Associate Chief, Portfolio Management

Jennifer HolladayJennifer is the Associate Chief of the Portfolio Management Team. Jennifer has been a member of Team DPS since 2014, serving as director of school development and support and leading authorizing practices for new charter and district-managed schools. Prior to joining DPS, she worked in Adams 14 and served as the board chair of Highline Academy Charter School. She spent nearly 15 years at a national civil rights organization, the Southern Poverty Law Center, where she served as education director and later as the senior adviser for strategic affairs. She is mom to one daughter, Zoe, who is being served successfully by a DPS innovation school.

(720) 423-3709 | Jennifer_Holladay@dpsk12.org


Jack Alexander Becker – Manager of School Development

Jack Alexander BeckerAs the Manager of School Development, Jack’s work involves development and distribution of the Call for New Quality Schools document and process, including evaluating prospective new schools. He also oversees the refinement, negotiation, and execution of contracts between new Charter schools and the Denver Board of Education, monitoring schools’ completion of conditions on which those contracts are based and supporting the development of official responses to any appeals filed with the State Board of Education by Charter applicants. Jack grew up in Denver and graduated from DPS schools Carson Elementary, Hill Middle, and George Washington High before going on to complete a BA at Colorado State University. He worked previously for the Charles F. Kettering Foundation in Dayton, Ohio, an operating foundation focused on helping communities collectively address problems affecting their lives, their neighborhoods, and their nation. Most recently he worked for the DPS Office of Family and Community Engagement accelerating the impact of family partnership and community engagement in driving student achievement. He holds an MPA from Syracuse University.

(720) 423-2444 | Jack_Becker@dpsk12.org


Natalie Grillo – Program Manager, Communications and System Building

Natalie’s passion to help others overcome obstacles and have an open path to achieve their goals has driven her life and career. That same passion drives her work as Program Manager of Communication and System Building where she helps ensure clear and efficient collaboration and processes among our growing network of Charter schools and DPS as, together, we strive to promote equity and quality education for all of our students. Prior to joining DPS, Natalie worked in both the business and nonprofit sectors, which has given her a breadth of experience in synthesizing seemingly varied priorities to meet common goals. Originally from the Northeast, Natalie has lived in Denver since 2001. She holds a B.A. in Public Relations from Taylor University and enjoys spending free time with friends, especially when it includes laughing, eating, cooking, camping, hiking, or snowshoeing.

(720) 423-2343 | Natalie_Grillo@dpsk12.org


Bailey Holyfield - Manager, Tiered Quality Assurance

Bailey HolyfieldBailey is the Manager of Tiered Quality Assurance and is responsible for supporting Tiered charter schools. She began her journey in education as a 2010 Dallas-Fort Worth Teach for America corps member at a turnaround school in Pleasant Grove teaching high school English to students who had failed to pass the state English Language Arts and Reading exit exam. Subsequently, Bailey served as a Teacher Advancement Program mentor teacher and secondary humanities instructional coach in Dallas before moving to San Antonio to take a position as the Director of Teaching and Learning for South San Antonio Independent School District. In her role in South San Antonio, Bailey supported principals through executive coaching around instructional leadership, led curriculum development for core content programming K-12, and created the instructional facilitator and instructional coaching programs for the district. Bailey received Bachelor’s degrees in English and Corporate Communications & Public Affairs from Southern Methodist University in Dallas, an M.A. in Educational Leadership and Policy Studies from the University of Denver, and holds a Colorado Principal License.  In her free time, Bailey enjoys live music, cooking, and playing with her two dogs.

(720) 423-2371 | Amanda_Holyfield@dpsk12.org


Maya Lagana – Senior Director, Portfolio Management

Maya Lagana

Maya is the Senior Director of Portfolio Management, where she leads the work to approve, review, assess, and renew both charter and innovation schools in the district. Prior to joining the Portfolio Management Team, Maya worked at the New York Charter Schools Institute, a statewide charter authorizer that is recognized for its quality authorizing work. There she served as the Institute’s Accountability and School Evaluation Analyst, responsible for analyzing student achievement data and coordinating site visits for the Institute’s 80+ charter schools. She started her career as a New York City Teaching Fellow, teaching third grade in the Bronx, before moving to Washington DC where she worked on several key education policy issues, including alternative teacher certification. She has also worked for Achievement First and Boston Collegiate Charter School, concentrating on fundraising and data systems. Maya holds a BA from Carleton College, a Masters in Elementary Education, and a Masters in Public Administration from NYU.

(720) 423-2588 | Maya_Lagana@dpsk12.org


Matthew Lanz – Data Analyst

Matt is a data analyst for the Portfolio Management Team. He graduated from UC Santa Barbara in 2010 with a degree in Mathematics and then joined Teach for America and moved to Navajo Nation in New Mexico. While in New Mexico, he taught 8th grade math, coached basketball, and led his school’s MESA program. In 2013, he moved to Denver and taught 7th grade math and coached track at STRIVE Prep GVR. In 2014, he began working for Art of Problem Solving, a company focused on challenging gifted math students and preparing them for math competitions. During that time, he was also an adjunct math instructor at Red Rocks Community College.

(720) 423-2036 | Matthew_Lanz@dpsk12.org


Ashleigh Madonna – Specialist, School Development

Ashleigh ashleigh madonnais the School Development Specialist. She coordinates the review processes for new schools and new innovation schools. She also provides support to the School Development team. Ashleigh has worked with the Colorado League of Charter Schools as an Events Coordinator, Policy and Advocacy Intern and supported the School Services team. Prior to her work with CLCS, Ashleigh participated in the Urban Leaders Fellowship, a policy fellowship led by Colorado Senator Mike Johnston, where she worked on affordable housing policy for the 2015 legislative session. Ashleigh also taught Pre-Kindergarten for a year as a Rocky Mountain Prep Teaching Fellow. In the 2012-2013 school year, Ashleigh served as a City Year Denver Corps Member at a middle school in the Far Northeast. Ashleigh received her B.A. Peace and Justice Studies from Regis University in 2012 and is currently enrolled in graduate school at Regis University. Ashleigh is a proud Denver native and DPS graduate (Go Warriors!).

(720) 423-2482 | Ashleigh_Madonna@dpsk12.org


Angie McPhaul – Manager, Accountability

Angie is tangie mcphaulhe Manager of Accountability for the Portfolio Management Team. Before DPS, she was in graduate school at The Harvard Kennedy School studying public policy. She concurrently consulted for The Campaign for Grade-Level Reading on state and local education policy. Angie taught Kindergarten at a public charter school with Teach for America in Prince George’s County, Maryland and worked supporting state-level child advocates at The Annie E. Casey Foundation in Baltimore. She holds as a B.A. from Stanford University.

(720) 423-2075 | Angie_McPhaul@dpsk12.org


Hannah Riviere-Platt – Manager, School-Based Flexibilities

hannah riviere-plattAs the Manager of School-Based Flexibilities, Hannah, in collaboration with other departments, oversees and supports the coordination of increased school-based decision-making across the District. Prior to joining DPS, she worked in operations and management at various start-ups, including a social and emotional learning solutions company. Hannah graduated from Hamilton College in upstate NY where she received her B.A. in Religious Studies. She initially grew up in France before moving to Philadelphia and understands firsthand the importance of language support. In her free time, Hannah is a mentor for a DPS student through Minds Matter and enjoys traveling, getting up to the mountains, cooking, and eating.

(720) 423-2591 | Hannah_Riviere-Platt@dpsk12.org


Elizabeth Stamberger – Associate Director, Ecosystem and Support

(720) 423-2192 | Elizabeth_Stamberger@dpsk12.org

Max Tweten – School Development Associate

Max twetenAs the School Development Associate, Max supports the authorizing of new schools and innovation schools. Max is from Portland, OR and a 2011 graduate of the University of Puget Sound in Tacoma, WA. He has spent the entirety of his career working to support students and their families, first as an after-school and summer-school instructor, then as a paraprofessional. Max then found his way to Denver as a Teach for America 2014 corps member, teaching kindergarten at University Prep – Arapahoe for three years. In his spare time, Max is an avid music enthusiast and aspiring casual athlete.

(720) 423-3584 | Max_Tweten@dpsk12.org

Becky Zachmeier – Specialist, Accountability

Becky zachmeierAs the Accountability Specialist, Becky will be supporting the Accountability team with the renewal and ongoing accountability processes. Becky’s past DPS experiences are as a classroom teacher who helped reopen the neighborhood, year-round school at Mitchell Elementary, a coordinator and licensing agent for the Brown Elementary International Baccalaureate Program, and a past school administrator at Brown and Cowell Elementary. Becky is a North Dakota native who came to Colorado to attend Regis University and decided to call Denver her home! Her major in sociology, minor in education, and Master of Arts in Curriculum and Instruction from the University of Colorado at Denver serve her well in this role. Additionally, her three children attended and graduated from DPS schools.

(720) 423-3826 | Rebecca_Zachmeier@dpsk12.org


Not sure who to call? See our Charter Partners or DPS Contact List