Executive Director

AnnMarie Baines

AnnMarie Baines has 20 years of experience in public speaking, vocal performance, and coaching. She has been a public speaking coach since 2001, including a decade at El Cerrito High, where her students have won prestigious awards at local, state, and national championships. The idea for The Practice Space came from her students, after years of hosting Sunday practices in her living room. AnnMarie has taught public speaking at UC Berkeley in the Department of Theater, Dance, and Performance Studies. She also performs with the San Francisco Symphony Chorus and studied voiceover acting at Voicetrax Sausalito. She currently serves on the Board of Directors for the Richmond Promise and project-based learning organization PBLWorks. In 2019, she was awarded a two-year Deeper Learning Equity Fellowship, a national fellowship for education leaders dedicated to promoting equity in schools and communities.

As a teacher and researcher, AnnMarie has focused on middle school, high school, and higher education, beginning her career as a high school special education teacher in the Boston Public Schools. During her time as a professor of secondary education at San Francisco State, she coached teachers and wrote a book for Teachers College Press entitled "(Un)Learning Disability". As a former Program Officer at the George Lucas Educational Foundation, she specialized in project-based learning, curriculum design, social and emotional learning, and developing youth voice. AnnMarie received her PhD in Educational Psychology and Learning Sciences from University of Washington, Master's in Education Policy from Harvard, teaching credential from Boston Teacher Residency, and undergraduate degree from UC Berkeley. She is a graduate of West Contra Costa Unified and an El Cerrito resident. Outside of The Practice Space, AnnMarie likes to bake cakes and other treats, unsuccessfully attempting to imitate what she watches on the Great British Baking Show.

Program Director

Diana Medina

Diana Medina is a first-generation Mexican-American, born and raised in Los Angeles, CA. She has dedicated her career to being a champion for causes that strengthen, empower, and educate the communities of color. She brings over a decade of experience in the nonprofit sector where she has worked architecting programs and capacity building initiatives in the areas of criminal justice, youth development, education advocacy, and family engagement. Her passion is to uncover the full potential of individuals and organizations to make the world a better place. She is excited to channel her experiences and skills to serve The Practice Space. 

Diana holds a Bachelors degree in Political Science from California State University, Northridge and a Masters degree in Public Administration from the University of Southern California. She is an alumna of the Coro Fellowship in Public Affairs and the Education Pioneers Graduate Fellowship. She is currently working on obtaining her certification in Coaching for Transformation. In addition, she is participating in Alegria Magazine’s Publishing Program, which supports up and coming Latinx writers to author their first books. Through this program she is working on her book, Heal Out Loud, which will be completed in 2021. In her spare time she puts her passions to work as a writer, storyteller, poet, and self-proclaimed extreme crafter who loves all things DIY.

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Development Director

Caroline Clarke

Caroline Clarke has worked in development for over 15 years in the UK and the US. For the last 9 years, she has been the development and operations director at the Green Science Policy Institute in Berkeley. In this role, she has worn many hats: grants management, prospect research, budget management and board relations, to name just a few. Previously Caroline lived in the UK and worked in the development offices of the London Business School and the London School of Economics. She later lived in India where she carried out prospect research projects for a variety of arts and education organizations. She holds a BSc (Econ) and an MSc (Econ) in Politics of the World Economy from the London School of Economics. 

Caroline is delighted to join The Practice Space team. She believes fostering confidence in youth through public speaking is critical for success in school, the workplace and every other aspect of life.

You will often find Caroline walking the neighborhood with her rescue dog Amber, rushing to pick up one of her kids from school or watching teen-friendly shows with her family.

Education & Outreach Manager

Caitlin Healy

Caitlin Healy is an educator with 15 years of experience teaching youth of all ages, as well as adults. Most recently, she helped launch WiseTech Ed, an education startup that empowers students, families and schools to develop community-wide solutions that address the unintended consequences of technology. Prior to WiseTech Ed, she taught social studies for seven years in public schools, where she helped coach teachers on project based and blended learning. As a Program Coordinator for San Francisco Peer Resources, she supported high school students in facilitating peer education workshops to over 1,000 middle and high school students. She has a teaching credential from Mills College in Oakland and a B.A. in American Studies from UC Santa Cruz. Over the years she has learned the importance of building people’s confidence and strong communication skills, so that communities feel empowered to advocate for themselves and others to create a more just world. Caitlin is thrilled to join The Practice Space team to build on this important work. She loves rock climbing, crafting, connecting with friends and family, and is proud to be born and raised in Oakland, CA.

Operations Manager

Margot Aishiteru

Margot Aishiteru has focused her career on operations and technical management. She was raised in Texas and returned to the Bay Area almost 10 years ago. She has a passion for advocacy, and holds a Bachelor’s degree in Communication from Stephen F. Austin State University in Nacogdoches, Texas. 

Margot is actively involved in the West Contra Costa Unified School District community, and currently serves as a member of the Parent Leadership Council,  Chair of the Community Advisory Committee for Special Education (CAC), Secretary for the District Local Control Accountability Plan Parent Student Committee (DLCAPS), and Vice Chair of the School Site Council (SSC) of Tara Hills Elementary School. In her spare time, she likes gaming with her husband and two awesome sons.

Project Coordinator, VISTA

Jim Bruce

Jim Bruce is a passionate educator, advocate, and leader, with a focus on promoting underrepresented student voices through various forms of expression. Fundamental to his career is his work in museums, educational book publishers, schools, and community centers. Recently, he taught studio and community classes and created home project videos for the Richmond Art Center. Mr. Bruce also provided research and vision to bring the Media Arts to the Young Audiences Northern California program. This effort led to a Davis Media Arts Professional Development Intensive “Best Practices” presentation. As an Americorps Vista member, he is excited to help grow and engage with the community of aspiring and thoughtful people nourished by The Practice Space. 

As an artist, Jim pursues multiple forms of visual expression and storytelling. He shares an office, studio, and warm home with his wife and three cats. His son is an ongoing source of inspiration, influence, and love as he studies at UC Davis.

Marketing Coordinator

Maddy Shenfield

Maddy Shenfield brings experience from being on various in-house marketing teams in the e-commerce, fine art, legal and non-profit sectors. A lifelong learner, she enjoys driving her creativity and the latest digital strategies to achieve success and craft meaningful work. She recently graduated magna cum laude from Tulane University in New Orleans with a B.A. in Communications and a Minor in Political Science and Management. At Tulane, she combined her personal and career passions by joining the college’s digital magazine as a contributing writer while working various internships. 

She returned to the Bay Area after college and is thrilled to join The Practice Space and help uplift youth voices by leveraging marketing strategies and community outreach. Outside of work, she enjoys spending time with friends and family, watching true crime shows, and perusing online shopping websites.

Board of Directors

Board President

Arthur Guimaraes

Arthur Guimaraes is Chief Operating Officer at the over $125 billion University of California Office of the Chief Investment Officer of the Regents (UC Investments) where he leads the Operating organization. He has managed the $25 billion defined contribution pension plan and in 2018 was awarded the Innovation award by Pension and Investment and the Defined Contribution Institutional Investment Association. He joined UC Investments in 2014. He has more than 15 years of experience in asset management including at Alberta investment Management Corporation and Manulife Financial. 
Arthur is passionate about diversity and inclusion. He is a member of the Portuguese Diaspora Council, a global network appointed by the President of Portugal. He is also passionate about education, having served on several school boards in both Canada and the US. Arthur holds a BBA from the Schulich School of Business at York University in Canada, where he graduated with distinction and has instructed in the BBA and MBA programs.  He has also served as an instructor for the Institute of Chartered Accountants of Ontario as a CPA, CBV and CA. In his free time, he enjoys spending time with his wife and three kids, who are also TPS alumni.
Board Vice President

Todd Groves

Todd Groves supported public education in a variety of roles over the past 20 years. Most recently, he was elected to the West Contra Costa Unified Board of Education from 2012–16, with his colleagues electing him to clerk in 2013 and president 2014. Todd led WCCUSD through the implementation of the largest one-to-one device to student initiatives in the country. He saw his role as bridging gaps between educational researchers, innovators, policy makers and practitioners.

Todd has also been a board member of many nonprofit organizations. He worked under the famous disability rights advocates Judith Heumann and Ed Roberts on international disability rights issues and toward the passage of the Americans with Disabilities Act. He raised two children whom attended WCCUSD schools and he performed many varied volunteer roles throughout the district. Todd earned an AB in Neuroscience from Oberlin College in 1986.

Board Secretary

Sylvia Sudat

Sylvia Sudat is an Investigator and Biostatistician at the Center for Health Systems Research, Sutter Health, where she focuses on analyzing data from electronic health records and translating the results into (hopefully) understandable English. She received her PhD in Biostatistics from the University of California at Berkeley. She is passionate about the importance of effective communication, and is deeply committed to supporting empowerment through a strong sense of confidence in personal expression. During her youth, she grew to love public speaking through theater, music, debate, and her involvement in the International Order of the Rainbow for Girls, a leadership and community service organization. When she is not at work or at Practice Space board meetings, she can most frequently be found singing, listening to audiobooks, running around after her three children, or drinking copious amounts of tea.

Board Treasurer

Paul Baines

Paul Baines is Engineering Manager for Data & Machine Learning at Checkr, Inc, after being part of the Data Science Technology team at (GE Digital). With the team, Paul helped build intelligent industrial systems that aim to make the world a safer and more efficient place. Prior to joining, he was an Assistant Professor of Statistics at UC Davis, where he learned the joys and challenges of public speaking by teaching Statistics to over 2,000 students. In addition to his role as Board Treasurer, Paul serves as resident handyman and barista at The Practice Space. Paul received his PhD in Statistics from Harvard University, an MPhil in Statistical Science from Cambridge University, and a bachelors degree in Mathematics from Durham University in England. In his spare time, Paul enjoys running ultramarathons and curling up with his dog, Leo, to recover from them.

Board Member

Ione Bell

Ione Bell has been a Human Resources professional with Alameda County for over twenty years, which includes identifying and analyzing issues related to classification, organizational structure, examination procedures, recruitment and other human resource related activities.  She has played an active role as a parent volunteer for several years: planning and coordinating school events, recruiting parents to support events, conducting workshops and other activities as needed, reviewing and recommending improvements to volunteer programs and opportunities, and maintaining records on fundraising and volunteer activities.  Ione attended Cal State East Bay focusing on Business Administration with an emphasis in Human Resources.  She is proud of being an Army veteran and loves crafting and travelling in her spare time.

Board Member

Mariana Castro

Mariana Castro is the Grants & Development Coordinator at RYSE Youth Center in Richmond, CA, where she is devoted to empowering youth and promoting social justice in underserved communities. Her background in research, policy, and advocacy focuses on international human rights in education and she received her Master’s in International Education Development from Columbia University. As a fluent Spanish speaker, experienced community organizer, and graduate of the El Cerrito High School Speech & Debate Team, Mariana believes in giving back to her community and helping other students like herself build confidence and strong communication skills. Aside from her service to The Practice Space, Mariana is passionate about crafts, reading, and stationary.

Christopher Lanman
Board Member

Lambie Lanman

Lambie Lanman is an Associate at DoorDash on the Business Operations/Strategic Finance Team where he focuses on data analytics and business strategy. He is also the founder of WeTree, a non-profit that aims to reforest the planet in an effort to reduce global warming. Lambie attended Yale University where he majored in political science and was a walk-on quarterback for the varsity football team. His strong passion for public speaking stems from his time in comedy as a sketch and stand-up performer at Yale as well as the various leadership roles he has navigated throughout his professional and athletic careers. In his free time, Lambie enjoys going on hikes with his Puppy, Maya, and movie nights with his family/loved ones!

Board Member

Joel Mackey

Joel Mackey is an attorney who most recently served as Executive Director of the Oakland Public Education Fund, aka the Ed Fund.  Joel is also an instructor with University of San Francisco, San Francisco State University and California State University East Bay. He is also a graduate student at Northwestern University seeking a master’s degree in mental health counseling. Prior to joining the Oakland Ed Fund, Joel was the executive director of the West Contra Costa Public Education Fund.  He has also worked as the legal and policy analyst with Making Waves in Richmond, CA., the Executive Director of East Bay Habitat for Humanity and as the Executive Director of Harbor House in Oakland. Before embarking upon a career in the nonprofit sector, Joel was employed as an attorney in law firms in both San Francisco and Chicago. He maintains his license to practice law in both California and Illinois.  His legal expertise in nonprofit legal issues augments his nonprofit legal advising and consulting practice focusing on group facilitation, strategic planning, organizational development, and mediation services.

Joel’s nonprofit experience includes service on numerous nonprofit boards, including East Bay Asian Local Development Corporation, Berkeley Community Law Center, the Homeless Action Center, Consumer Credit Counseling, the People’s Credit Union, and the Family Independence Initiative. He is a graduate of Boalt Hall School of Law at the University of California, Berkeley, and Garrett-Evangelical Theological Seminary at Northwestern University.  He completed his undergraduate studies at Trinity College. He enjoys coaching youth sports and is currently the head coach of the girl’s varsity basketball team at Making Waves High School. He has also coached boy’s high school basketball and youth soccer for more years than he can remember.

Board Member

Maria Resendiz

Maria Resendiz is a community outreach worker with over 20 years of experience working in local schools in the City of Richmond and the West Contra Costa Unified School District. As a program developer and coordinator, she connects families with community resources and facilitates learning experiences and partnerships to help parents better advocate for themselves and their families. Maria is a passionate networker, connecting people to help improve conditions for children in urban schools. She is excited to serve on The Practice Space Board to help individuals discover who they are and find their voice in the world. Outside of work, Maria spends her time on family activities and teasing her husband and best friend of 28 years.

Board Member

Nathan Warner

Nathan Warner is the West Regional Director of EL Education, joining the EL team after serving at the George Lucas Educational Foundation as Senior Program Officer, Program Officer and Director of Professional Development for four years. In these roles, Nate managed a number of research and development partnerships designed to gather evidence around the effectiveness of project-based pedagogical programs and practices. He leveraged his expertise in student-centered learning practices to inform curriculum design and teacher professional development programming. Nate is dedicated to urban education and believes strongly in giving all students access to high-quality educational experiences. He is also a former secondary social studies teacher and instructional leader in the New York City Public Schools. He is proud to be a co-founder of the Washington Heights Expeditionary Learning School (WHEELS) in Northern Manhattan, where he enjoyed collaborating with teachers as a leader of instruction and school culture. Nate received his PhD in Sociology with a focus on education and inequality from the Graduate Center of the City University of New York. On the weekends he enjoys hiking and roughhousing with his 4-year old son, Aiden.


Coach - Debate

Joel Jacobs

Joel Jacobs has been involved with debate for four decades, as a successful high school and college competitor, judge, debate parent, and coach. He claims to have been involved in parliamentary debate longer than any other high school coach in California, but has no idea whether that is actually true. He has coached debaters who won the high school and college national championships, the California State Championship, and invitationals on both coasts, and who were ranked in the Top 5 nationally. He is currently the head coach of Berkeley High School, and serves on the board of the National Parliamentary Debate League, as the Director of the Parliamentary Tournament of Champions. By day, he is a practicing lawyer, and sometimes serves as faculty in a trial skills training program for other lawyers.

Program Advisor and Coach

Cristy Kountz

Cristy Kountz has been involved in public speaking since her days on the El Cerrito High School speech and debate team, both as a student and a former coach. She is a longtime advocate for the education needs of English Language Learners and has worked with teens from all over the world in both the Duval County Public Schools in Florida and the West Contra Costa Unified School District in the Bay Area. Cristy is passionate about helping The Practice Space provide a space in the community to help people improve and empower themselves through the art of communication. She spends her spare time doing yoga and visiting family and friends on both coasts.

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Coach—Acting and Oral Delivery

Gabrielle Meacham

Gabrielle Meacham is a Theater and Music major at Pepperdine University, where she also studies dance and stage directing. She grew up performing in Bay Area community theaters, dance recitals, and voice recitals. At El Cerrito High School, she competed for four years with the Speech and Debate Team, and has coached the Summer Camp for the past three years. She is passionate about teaching, and loves supporting students in becoming the most confident versions of themselves through performance and communication. 

Coach—Young Speakers Club and Debate

Ryan Miller

Ryan Miller is a El Cerrito High School alumni. He is pursuing a Material Science and Engineering Major and an Education Minor at the University of California, Davis. In high school he joined the Speech and Debate team for three years to improve his public speaking ability and become more comfortable with it. Ryan understands the intimidation and fears of public speaking and wants to help other students overcome them and improve.

Coach—Young Speakers Club and Comedy

Jan Solomita

Jan Solomita is a public speaking coach with a rich and varied background that he brings to his craft. Jan began his career working with young people in his native Massachusetts at The Newton Youth Foundation, where he was eventually named Theater Arts Director leading drama exercises and overseeing in-house production. He also has a background in the performing arts as a SAG/AFTRA actor and a professional comedian. Upon coming to the Bay Area Jan joined the staff as a counselor at Lucinda Weeks/Edgewood Children’s Center in San Francisco, while simultaneously studying acting under Jean Shelton. Over the years Jan has developed seminars and workshops as a part of his coaching practice. He is a consummate speaker and trainer bringing his experience and insights to individuals and small businesses in their public speaking.

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