Our Executive Committee
Mark Jewell

Mark Jewell is an elementary school teacher in Guilford County, NC, with more than three decades of experience—most of it teaching fourth and fifth grades. He was elected to the NEA Executive Committee in 2020 for a three-year term.
In 2018, as president of the North Carolina Association of Educators (NCAE), Mark mobilized thousands of North Carolina educators who flowed into the streets, and onto the steps of their state capitol, as part of the nationwide #RedforEd movement, calling for increased funding for public schools and helping to reenergize the entire labor movement.
Mark is also past president of the Guilford County Association of Educators (North Carolina), and served on the Board of Directors for NEA and for NCAE. In 2016, during his first term as NCAE president, North Carolina’s Greensboro News and Record named Mark one of the city’s “Eight Men Who Make a Difference.”
A committed, outspoken and experienced leader, Mark is a strong advocate for children, young adults, and educators. He spent 10 years as a classroom teacher in West Virginia, and the last 22 years with Guilford County Schools (GCS), serving at Oak Hill Elementary in High Point and Murphey Traditional Academy in Greensboro, receiving the honor of Teacher of the Year at both schools.
More recently, Mark was a lateral entry specialist for the GCS Human Resources Department, providing support for new teachers entering the profession through alternative licensure pathways. Mark has also contributed to numerous community groups including Safe Schools North Carolina Board of Directors, North Carolina Science Math and Technology Board, Capital Area Workforce Development, and the North Carolina Teacher of the Year Selection Committee. In 2018, he was appointed education chair of the North Carolina NAACP.
Determined to connect all of his work as a leader to the magic that happens in the classroom, Mark is a respected voice on public education policy, and a champion for all stakeholders at the local, state, and national levels. The 2018 edition of North Carolina’s Longleaf Politics rated Mark one of the state’s top 15 political influencers.
Mark holds a bachelor’s degree and a master’s degree—both in elementary education—from Marshall University.
Gladys Fátima Márquez

Gladys Fátima Márquez is a high school bilingual English Language Learners (ELL) Teacher with over 20 years of classroom experience. She was elected to the NEA Executive Committee in 2021 for a three-year term.
As the past chair of the NEA Hispanic Caucus, Gladys organized nationwide events to raise awareness about the plight of immigrants in America, including “Teach-Ins” at immigration detention centers, humanitarian missions to shelters at the border, and helped organize massive marches in protest of the national policy leading to the separation of immigrant families and the incarceration of immigrant children.
Gladys also lobbied and led efforts in support of a clean Dream Act, and fought for Deferred Action for Childhood Arrivals (DACA), advocated for Deferred Action for Parental Adjustment (DAPA), and helped facilitate countless “Know-Your-Rights” clinics to help protect immigrant communities across the nation. Her goal has always been focused on the advocacy and protection of those living in the shadows of America’s broken immigration system.
Gladys began her education career in Midlothian, Illinois in 1996 working as a parent liaison, Spanish language translator, in her sons’ elementary school. In 2000, she began her teaching career as a 7th grade bilingual/ELL student and has since taught students in grades ranging from kindergarten to adult education.
Gladys holds a bachelor’s degree in English/Language Arts Education, a Master of Arts in secondary school administration, and a Doctor of Education in multi- and interdisciplinary studies, all from Governors State University in University Park, Illinois.
Ron “Duff” Martin

Ron “Duff” Martin is a middle school social studies teacher in Eau Claire, Wisconsin with more than two decades of classroom experience – most of it teaching seventh and eighth grades, but also in the alternative high school/off-campus program. He was elected to the NEA Executive Committee in 2021 for a three-year term.
Ron was the first Native American president of the Wisconsin Education Association Council (WEAC), the largest educators’ union in Wisconsin, and has spent his life’s work championing inclusion and acceptance over his 20-year career in the classroom. He has served as an advisor to “Where Everybody Belongs,” an orientation and transition program that welcomes sixth and seventh graders and makes them feel comfortable throughout the first year of their middle school experience.
Ron previously served as the WEAC vice president and secretary-treasurer, as president of the Eau Claire Association of Educators, and as a director on NEA’s board.
As a dedicated and experienced leader, Ron also represents Wisconsin educators on state and national coalitions for school safety, diversity, and restorative justice and has spent his life and career passionately advocating for the eradication of institutional racism in our education system. Ron has a special interest in building the education professions through outreach to new educators, educators of color, education support professionals, and strengthening local education unions. His classroom management workshops are highly sought after by educators at all stages of their careers, who credit his humor and real-world experience for making the trainings relevant and practical.
Ron has also directed faith-based youth programs and ministries and was a member of the board of directors for the Greater Eau Claire United Way. He is president of the Eau Claire Patriotic Council and active in many civic organizations.
Ron holds a bachelor’s degree in education from the University of Wisconsin at Eau Claire.
Robert Rodriguez

Robert Varela Rodriguez is a special education teacher in the San Bernardino City Unified School District. Delegates elected Robert to the National Education Association (NEA) Executive Committee for a one-year term in July 2018.
A passionate educator and longtime union activist, Robert has represented California on the NEA Board of Directors for six years, served three years on the NEA Budget Committee and completed a two-year term on the CTA Board of Directors. He served for three years as the president of the San Bernardino Teachers Association and three years as vice president. During his 14 years of teaching, Robert has worked at the elementary, middle school, special day class and resource specialist levels.
Robert believes that only through organizing and collective action can we effect real and lasting change for educators, students, and public education. He is committed to ensuring that every student - regardless of race, zip code, or economic status - has access to great public schools.
Robert received his bachelor’s degree in science and a master’s degree in education from California State University, San Bernardino.
Christine Sampson-Clark

Christine Sampson-Clark, a special education teacher in Trenton Public Schools, was elected to the National Education Association (NEA) Executive Committee in July 2019 for a three-year term. The NEA Executive Committee includes the NEA president, vice president, and secretary-treasurer, plus six members elected at-large by the Representative Assembly.
Sampson-Clark began her career in education 30 years ago as an education support professional and since then has taught in special education programs and alternative education programs, and also provided literacy intervention through the Reading Recovery program.
She served two three-year terms on the NEA Board of Directors. She also served as chair of a number of NEA boards and committees, including the NEA Board’s Black Caucus and the NEA Friends of Education Committee. Recognizing the importance of social justice and community activism, Sampson-Clark is passionate about her community involvement with the Not in My Neighborhood community advocacy group and the Rising Over Sexual Abuse (ROSA) Warriors.
Sampson-Clark is dedicated to raising issues on the national agenda that are important to students and NEA members. She can often be found using her social media platform to encourage others to use their voice and to advocate for those in need.
She received her bachelor’s degree from Rutgers University and earned her master’s degree in special education from Grand Canyon University. She is currently a doctoral candidate in organizational leadership at Grand Canyon University.
Hanna Vaandering

Hanna Vaandering is an elementary physical education teacher from Ridgewood Elementary in Beaverton, Oregon. Hanna taught elementary physical education for 17 years at Ridgewood. Hanna was elected to the National Education Association (NEA) Executive Committee in July 2017. She has also served two successful terms as President of the 44,000-member Oregon Education Association (OEA).
While at Ridgewood, Hanna started a successful rhythms program to help her students gain a love for movement and dance. As OEA President, Hanna helped facilitate the creation of “A New Path for a Balanced System of Assessments.” This educator lead work lays the groundwork for creating a system of assessment that honors student learning over student testing.
Hanna is committed to our vision of a great public school for every student, fighting for the rights of each and every educator, and advocating for the school funding necessary to build the schools our students deserve.
Hanna was born and raised in Washington County, Oregon. She enjoys traveling, but is proud to call Oregon home. A graduate of Pacific University in Forest Grove, she was a two-time All-American and Academic All-American catcher for the Lady Boxers. In her free time, she enjoys scuba diving, water skiing and spending time with family and friends.