Marissa Castro Mikoy, Executive Director

(214) 570-4855


Marissa Castro Mikoy comes to After-School All-Stars North Texas as the Executive Director with over 16 years of professional experience in the education and non-profit sector. Prior to joining the ASAS team, Marissa worked with the nonprofit, Dallas Afterschool where she was focused on building and implementing continuous quality improvement systems within the Dallas out of school time community. She moved back to her home state of Texas in 2011, from Washington DC, where she worked with the DC Public Charter School Board. Marissa was charged with providing academic and operational performance oversight to DC charter schools as well as providing early childhood technical support. Marissa was instrumental in leading a city wide Task Force of DC charter schools in the development of an Early Childhood Performance Management Framework that is being used to assess DC public charter schools using common goals and metrics.


Marissa’s work experience includes directing and leading early childhood programs with several grassroots nonprofits, as well as working with national nonprofits in fundraising and community organizing. Marissa has worked on early childhood and education policy issues at the local and national level, is passionate about increasing the level of quality of education in under-resourced communities. In 2012, Marissa was honored at the White House by President Obama’s Administration as a “Champion of Change” for her work in AmeriCorps and career dedication to social justice and education. She is a graduate of St. Edward’s University in Austin, Texas, where she earned a degree in Business Administration and Management and holds a Nonprofit Executive Leadership Certificate from Georgetown University. Marissa lives in Dallas with her husband and two sons, Xavier and Sebastian.


Tori Schwarzlose, Program Manager

(214) 570-5239


Tori began working with the After-School All-Stars North Texas team in August 2015 and now serves as the Program Manager. Prior to joining ASAS, Tori was a Quality Advisor for Dallas Afterschool where she partnered with afterschool programs to develop more effective, high-quality programming for participants.


Tori attended Texas A&M University and has her Master’s degree in Youth Development. In her spare time, Tori is a volleyball coach for a travelling club team of 12 year olds. Tori is passionate about the mission of ASAS and is excited to use her previous experiences to lead the North Texas program team!


Lizzie Arington, Development & Marketing Manager


(469) 330-4970


Lizzie joined the ASAS North Texas team in July 2015. She graduated from Miami University with her B.S in Family Studies and a minor in Entrepreneurship. As the Development & Marketing Manager of the North Texas Chapter, Lizzie’s roles include working closely with the Executive Director to raise funds and awareness by cultivating new  corporate, foundation, and individual relationships, organizing fundraising events, and helping to implement the overall marketing strategy for the chapter.


Prior to joining ASAS, Lizzie worked as Assistant Program Director at The Salvation Army in Southwest Ohio. Lizzie is extremely excited to be part of the After-School All-Stars team. She is dedicated to seeing all youth unlock their potential and have an equal opportunity at success.


Connie Tam, Operations Coordinator


(469) 330-4739


Connie started with After-School All-Stars North Texas in September 2016 as Operations Coordinator. She is responsible for supporting the team in areas of human resources, finance, and office management.


Connie graduated from Penn State University majoring in Psychology, Business Option with a minor in Labor and Employment Relations. Being a Texas resident since 2005, she is excited to be back in Dallas working with ASAS and seeing the students grow through the program!


Jamall Houston, Site Coordinator


(214) 206-7225 


Jamall joined After-School All-Stars North Texas in January 2017 as the Site Coordinator for E.H. Cary Middle School. He graduated from Midwestern State University with a B.S. in Criminal Justice and a minor in Mass Communication. He has worked with youth in after-school programs for eight years and is excited to be able to continue at After-School All-Stars North Texas.