Meet Our Educators

Our accomplished educators at All Nations Community School are selected based on stringent criteria, including their teaching expertise, Christian faith, and dedication to furthering our Mission and Vision. We are blessed to have highly credentialed, dedicated experts in their fields. See what parents say about ANCS teachers!

In the classroom, we strive to create a loving and respectful environment, where each student feels valued and safe to express opinions, learn from mistakes, and build resilience through growth. All Nations educators are committed to helping each individual child excel and achieve their fullest potential.

Outside of the classroom, every teacher at All Nations Community School is a dedicated learner. Teachers at ANCS regularly engage in continued professional development, as well as cycles of peer observations and feedback. Several have presented papers at professional conferences or published peer-reviewed scholarly work. We model an attitude of lifelong learning: always honing our craft, learning new methods or tools, and getting fresh ideas to keep students engaged.

Teaching Faculty

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Christina Callaway, M.A.

Director and Co-Founder

G8-9 ELA

"I want to teach students to value the process over the end result and to see failure as opportunities for growth and reflection. I want them to know that anything worth doing will require perseverance and a determination to accomplish the task at hand. The reward is in their own personal satisfaction and seeing the results of their pursuit of excellence." 

Christina Callaway was born in Manila, Philippines, and moved to Texas as a junior high student. Her experience as a young student at international schools helped her develop an appreciation for other cultures and languages. This eventually led to an adventurous career teaching for a decade in international schools in South America and the Middle East. She has lived in six countries, is fluent in Spanish and speaks conversational Portuguese and Tagalog.

Ms. Callaway has been in education for over 15 years and has taught a variety of subjects and grade levels throughout her career. She holds a bachelor’s degree from Smith College and a master’s degree in Educational Leadership and Administration from The George Washington University. Ms. Callaway has served as International Baccalaureate Coordinator, Assistant Principal, and Principal in the private school sector.

Ms. Callaway's desire is for every student at ANCS to know how much they are loved and uniquely made by God. Her own uniqueness comes out through her love of exploring new places, bartering in flea markets, singing to oldies, and spending time with her husband and two children.


Stephen Michalik, M.Ed.

Co-Founder and STEM Coordinator

G8-9 Lead Teacher, Math/Sci, G5-7 Social Studies

"The joy of teaching comes from witnessing my students make connections across various content areas. I enter my classroom each day with the mindset that all students can learn. My goal is to develop students to ask questions and think about mathematics in the world around them. I am thrilled to share my passion for STEM learning and innovation."

Stephen Michalik is a graduate of the University of Northern Colorado with a Master’s in Interdisciplinary Studies and Mathematics, and has been in education for over 15 years.

Mr. Michalik recently participated in Texas A&M's Texas Regional Math Collaborative which focuses on project-based learning, algebraic thinking and problem-solving. He was also selected to participate in the Texas A&M Innovative Technology Experiences for Students and Teachers, a collaborative research project promoting STEM through the use of building automation applications, connected devices (commonly called the Internet of Things) and 3D printing. He has presented at both district and state mathematics conferences on technology and its influence in the math classroom.

Mr. Michalik recently won two STEM grants from Rice University to support our Robotics program through a "Breaking Barriers" series of robotics challenges and competitions, in partnership with Journey School, a school for students with special needs and different abilities.

When he is not in the classroom, Mr. Michalik stays active in the community: training for triathlons and marathons, coaching swimming, and mentoring prison inmates at the Wallace Pack Unit in Navasota.


Dr. Nicole Puig-Herz, Ph.D.

Language Program Coordinator

G3-4 Dual Immersion Spanish Teacher, G5-8 Spanish

"I believe deeply in the transformative power of mentoring relationships and individualized instruction. My goals in the classroom always include developing students' confidence and preparing them for real-life cultural and linguistic situations they will encounter. At ANCS, I work hard to meet each child's needs and interest in Spanish, and I challenge them to develop their fluency in speaking, literacy, and cultural awareness. I am passionate about expanding students' global worldview!"

Dr. Nicole Puig graduated Summa Cum Laude with Dual Honors Baccalaureate degrees from Virginia Tech in Spanish and International Studies, with minors in French and European Studies. After living in Germany for a year, she earned her Ph.D. from Cornell University in Romance Studies with a concentration in Hispanic Literature and a subspecialty in Catalan Studies.

Dr. Puig has taught ages 4 to adult in a multitude of settings (Bryn Mawr College, Cornell University, community college, individual and group private classes), before shifting to private school. She has nearly two decades of experience teaching language, literature, writing, cultural studies, and film. Dr. Puig speaks eight languages with varying levels of fluency, of which she has taught four: Spanish, Catalan, French, and English. She has published academic articles and translations and has presented in numerous academic conferences.

As a Cuban-American who is also raising multilingual children, Doctora Puig relates viscerally to the opportunities and challenges of raising bilingual children in the U.S. She loves encouraging heritage speakers to embrace their culture and challenge themselves to achieve new proficiency levels in Spanish.

In her spare time, Dr. Puig enjoys running, cooking, singing, playing the piano, and traveling. She is passionate about women's education and health, having volunteered with Refugee Services of Texas and traveled to Peru several times as interpreter for her church. She is also currently serving on committees for Global Missions and Mission Endowment at church.

Dr. Puig believes everyone can and should be exposed to at least two languages and have opportunities to engage with other cultures. The earlier the better, but it is never too late!


Aida Serrato, B.S.

Grades Pre-K-2 Dual Immersion Spanish Teacher

Aida Serrato was born in San Diego, California, but grew up in Baja California, Mexico. She received her degree from Houston Baptist University in Elementary Bilingual Education, with an Elementary Certification for EC- 6th and TESOL Certificate. She also has an Associate's Degree in Biblical Studies from Southern California Seminary. Maestra Serrato is currently pursuing her Masters of Arts in Ministry with a concentration in Christian counseling at Grace School of Theology. 

Maestra Serrato has a long history of loving to teach and work with children. From AWANA Club’s Leader and teacher, Kids’ Camp Counselor and staff, VBS Teacher and Sunday School Teacher, her love for teaching grew as she was involved in children’s ministry since her youth. As a student at HBU, she was involved in professional organizations such as the Bilingual Education Student Organization (BESO) and the Association of Student Educators. In 2015 she was awarded Student of the Year by the Bilingual Education Student Organization for her service at BESO. She has also worked as a preschool teacher at a private school in The Woodlands, served in mentoring, tutoring, and after school programs in HSID, has taught ESL and Spanish lessons both online and in-person to multicultural students. 

Maestra Serrato lived in the Dominican Republic as a missionary for two years, working with a Christian organization called The Navigators in student ministry at the University of Santo Domingo.


Maestra Serrato believes in the importance of exposing students to learn a second language at an early age to become not only bilingual but also biliterate, opening a wide range of opportunities for them in the future. She is thrilled and grateful for the opportunity to contribute to the mission of ANCS by providing the best dual language immersion education for the children in a safe environment where they feel loved and valued. 


In her free time, Maestra Serrato loves to go hiking, travel, play guitar and sing, do art lettering, or just enjoy a good book accompanied by a cup of tea.


Sarah Cossick, B.A.

Grades PreK-2 Dual Immersion English Teacher

"I work to instill a love of learning in my students by building personal relationships that embrace the uniqueness of each child. I am passionately devoted to educating a diverse range of students by establishing a positive and productive learning environment that fosters and promotes the academic potential and social wellbeing of all students, so that they may leave my classroom as life-long learners."

Sarah Cossick was born and raised in the Houston area and moved to Colorado to pursue her university education before returning to her hometown roots. She graduated Magna Cum Laude from Colorado Christian University with a B.A. in Liberal Arts and Elementary Education and a specialization in Biblical Studies. Mrs. Cossick is certified to teach Early Childhood to 6th grade in Colorado and Texas and is accredited by the Association of Christian Schools International to serve in Christian schools around the world.

Mrs. Cossick has been pursuing a career in education since high school, when she fell in love with the profession by teaching Sunday School classes at her church. She has taught preschoolers through college-aged students in a variety of settings and finds that her passion for teaching only grows over time. She is extremely motivated to provide engaging lessons, hands-on activities, and challenging students to pursue academic excellence.

Outside of school, Mrs. Cossick can be found playing with her dog, Denver; crafting; traveling; and experimenting in the kitchen. She and her husband have hearts for hosting, so she is happiest when her home is full. 


Kimberly Hewitt, B.S.

G3-4 Dual Immersion English Teacher, G5-7 ELA

"Building a personal relationship with each of my students is integral to my holistic approach. My goal is to develop fluent readers and articulate writers with dazzling communication skills. Coupled with social-emotional development, this strong foundation is the platform to help students develop their personal voice and the confidence to use it in impactful ways."

Mrs. Kimberly Hewitt is from Texas and comes to All Nations with over 25 years of experience in education. She has taught various grades from Pre-K to 5th grade, including two years in an International Baccalaureate program. She also has administrative experience, having been director of a small Christian private school for 8 years. 

Mrs. Hewitt lives with her husband and their Yorkie, Olivia. Outside of school hours, Mrs. Hewitt enjoys tutoring international students for English. She has four adult children and three grandchildren. One of her sons and his wife are also in education. Mrs. Hewitt LOVES to read and share her love of reading with her students. She also enjoys playing board games...except Monopoly! A true Texan, she loves chips and queso and any kind of Mexican food.

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Charity Welty, B.B.A.

G5-7 Lead Teacher, Math/Sci, G8-9 Social Studies

“My passion as a teacher stems from a desire to see each child enjoy discovery and learning. I also want my students to know that they are valued and loved, and that their life has great purpose. They can be change makers in their communities.”

Charity Welty was born in Tacoma, Washington. She grew up in a military family, which afforded her the opportunity to grow up in the various regions of the United States, the Philippines and Germany. She received her B.B.A. in Marketing from the University of Texas, San Antonio. 

Mrs. Welty has over 17 years experience in education, teaching various subjects and grade levels. She is certified in Texas for Grades 4th-8th Generalist in all core subjects, ESL (English as a Second Language Learners), and Gifted and Talented. She has also enjoyed coaching volleyball and basketball.

Mrs. Welty enjoys serving with her husband in their church as youth leaders and as children’s church teachers. Currently, they help with a 6th grade ministry that seeks to mentor young students and equip them with the skills to be leaders and serve in their communities.

Through her various travels around the world, God has given her a passion for all people and a strong calling to serve others by helping and sharing hope. Her passion has brought her to Peru, Mexico, El Salvador, Philippines, Thailand, and Taiwan on short-term missionary trips. Mrs. Welty also serves with local ministries that help the communities of Houston and north Houston. God has enabled her to travel and reach children with the love of Jesus. Being able to do many of these activities alongside her husband and two children is just one more huge blessing God has provided as well. 

Beatriz Rubio, M.M.

G5-9 Spanish

“As teachers we want children to become independent, make their own decisions, and become self-assured in their learning. Teachers are there to guide, observe, and be the best role models they can be.”

Maestra Rubio has taught in both public and private schools for over a decade, including experience in both Montessori and Christian schools. She graduated from the University of Houston in Interdisciplinary Studies and received her Masters in Ministry from Grace School of Theology in The Woodlands.


Maestra Rubio was raised as a bilingual speaker of English and Spanish, so she is passionate about her students learning Spanish. She is experienced in bilingual education.

Her guiding Bible verse for her teaching is from Proverbs 22:6, "Train up a child in the way he should go, and when he is old, he will not depart from it."


Claudine Dehaquiz, M.Ed.


"A child's character, beliefs, values and culture should be respected. Their curiosity, strengths and talents should be nurtured. Love, kindness, solidarity, honesty, goodwill and honor should be taught and motivated intrinsically not only at home but in any learning institution and environment. But above all, love is the key to every success as God has given us that example through His son Jesus Christ."

Maestra Dehaquiz was born and raised in New York with parents that immigrated from Colombia, South America. After graduating from Nyack College in Education and History with a minor in Bible, she decided to head off to Colombia to learn about her parents' culture and language. She met her husband, William, in Bogotá, where two years later their daughter Carolina was born. The family later moved to Mexico City, and the following year her son Juan Camilo was born. During her time abroad in Colombia and Mexico, Claudine taught in several bilingual schools. The family later decided it was important for Caro and Juan Camilo to experience school in the USA and the Lord led us to Texas.

Maestra Dehaquiz has taught Bilingual Education in Texas for more than 10 years. After her Masters degree from Lamar University in Education Administration, she became a Bilingual Instructional Specialist at Magnolia ISD. In 2016 she decided to take a sabbatical to pursue her passion in Art. Claudine is a self-taught artist. Her creativity has opened doors to her own art show, art sales, teaching art and curating her first Student Art Show. In her free time, she participates in Bible studies, volunteers at her church’s food pantry, designs graphics, practices Lettering Art and cuddles with her 3 dogs, Romeo, Juliet and Lucy.


Todd Wolfard, B.S.

Physical Education

"Coaching provides me the opportunity to develop youth. My goal is to meet children where they are and help them develop into well-balanced  young men and women."

Todd Wolfard graduated from the University of Oklahoma in 2000 with a B.S. in Environmental Science. He spent 12 years as a HAZMAT/Health and Safety professional before entering the world of coaching and working with youth.


Coach Todd has a broad range of experience in youth development and as a sports and physical education coach. He has coached over 20 basketball teams and facilitated various basketball clinics throughout The Woodlands community. He also teaches the Homeschool PE program for the YMCA of Greater Houston.

Coach Todd is actively involved in The Woodlands community, as well. He and his wife established a mentoring program through their local church, which provides independent living and life skills, coupled with faith-based teachings.

Coach Todd is committed to caring for and developing local youth. His approach is centered on encouraging students to make positive and thoughtful decisions guided by scripture.


Career and Guidance Counselor 

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Donna Reed, M.Ed.

Career/Guidance Counselor

Ms. Reed is a Texas- and New York-certified teacher, with over 35 years of experience in the field of education. She graduated summa cum laude from both high school and college. Her love of international schools began when she student taught in Florence, Italy.

Ms. Reed has taught math at Lone Star College and Math Methods at SHSU. She has served as College and Career Counselor at both private and public International Baccalaureate schools.

Ms. Reed is a member of both the Texas Association for College Admission Counseling (TACAC) and the National Association for College Admission Counseling (NACAC), and she serves as co-treasurer for Montgomery County Retired School Personnel. She has extensive experience in working with gifted students and is a former member of the Texas Association for the Gifted and Talented.

Ms. Reed loves to read, travel, and attend Bible Study Fellowship classes. She has two grown daughters and has been involved with the founding of ANCS since its early days. Ms. Reed will be on campus periodically throughout the school year to meet with students and parents.

Language Arts Consultant


Dr. Joyce A. Carroll, Ed.D., H.L.D.

Literacy Specialist

In her sixty-year career in education, Dr. Joyce Armstrong Carroll has taught every grade level from primary through graduate school. In the past forty years, working in tandem with her husband Edward Wilson, she has trained thousands of teachers, who, in turn, have taught hundreds of thousands of students. A nationally known consultant, she has served as president of TCTE and on NCTE’s Commission on Composition and its Standing Committee Against Censorship. 


Recipient of the Edmund J. Farrell Lifetime Achievement Award in Education and the Honorary Doctorate of Humane Letters for her work in Education, Dr. Carroll has written numerous articles and over twenty books—most on teaching and writing, including Acts of Teaching: How to Teach Writing, now going into its third edition. She has also co-authored a national writing and grammar series, as well as AbydosPRO: An Integrated Writing and Grammar Curriculum. Dr. Carroll co-directs Abydos Literacy Learning.

Most recently, Dr. Carroll has authored the Writing Workshop Teacher’s Guide within the comprehensive English and Spanish Language Arts programs HMH Into Reading and HMH ¡Arriba la Lectura!


Parents agree that our faculty at ANCS are outstanding!

"Loving, caring, patient, understanding, and really want to KNOW each kid"

"Professional, passionate, and committed to what they do"

"Very competent, caring, creative faculty"

"Some of the hardest working, overly-qualified teachers who love and care for their students"