meet our advisors

academic advisors

dual language education researcher
 professor in second languages and cultures education, University of Minnesota

Diane J. Tedick, Ph.D. serves as addalingua academic advisory board president. She is a Professor in Second Languages and Cultures Education in the Department of Curriculum and Instruction at the University of Minnesota, as well as the coordinator for the Content-Based Language Teaching through Technology (CoBaLTT) Project and the faculty coordinator for Immersion Projects housed at CARLA.

The author or co-author of numerous books and studies in the field of dual language immersion education, Dr. Tedick continues to impact immersion educators and administrators from around the world as the Coordinator of Certificates in Advanced Practices in Second Language Teaching and Dual Language and Immersion Education at the University of Minnesota.




bilingual education researcher
immersion teaching specialist and immersion program director at the Center for Advanced Research on Language Acquisition

Tara Fortune, Ph.D. is a member of the addalingua academic advisory board. She serves as immersion teaching specialist and immersion program director at the Center for Advanced Research on Language Acquisition (CARLA) at the University of Minnesota.

An accomplished author and researcher, Dr. Fortune’s current research interests include immersion students’ oral language proficiency development and the struggling immersion learner. Her work, Struggling Learners and Language Immersion Education: Research-Based, Practitioner-Informed Responses to Educators’ Top Questions, remains a go-to resource for addalingua as we work to communicate that ALL students can succeed in dual language immersion education.





Spanish immersion researcher
cofounder and lead developer for WIDA

Dr. Margo Gottlieb is the co-founder and Lead Developer for WIDA at the Wisconsin Center for Education Research, University of Wisconsin – Madison and Director, Assessment and Evaluation, for the Illinois Resource Center. She has spearheaded the crafting of language development standards and has designed assessments, curricular frameworks, and instructional assessment systems for language learners. Starting her career as an inner city ESL and bilingual teacher in Chicago, she has since worked with thousands of educators to share in professional learning with states, school districts, publishers, governments, universities, and organizations. Dr. Gottlieb serves as a member of addalingua’s academic advisory board.

leadership advisors

bilingual education school principal
principal of Holland Language Academy

Iliana Vásquez is the principal of Holland Language Academy at Van Raalte, and a member of the addalingua educational leadership board. Principal Vásquez was born in Traverse City, Michigan to parents from Mexico and Texas. She grew up in a bilingual home speaking Spanglish, and her family migrated every summer from Texas to work harvesting produce in Traverse City. Her family eventually put down roots in Holland, Michigan, where Iliana attended and graduated from Holland High School.

She went on to study at Grand Rapids Community College, earning an Associates Degree, and later transferred to Grand Valley State University (GVSU), where she earned a Bachelor’s of Art, and a Bachelor’s of Movement Science. She most recently earned a Master’s Degree in Educational Leadership and Administrative Certificate from GVSU.



dual language immersion school administrator
administrator, challenge-seeker

Bill Van Dyk serves as a member of the addalingua academic leadership board, and is a trailblazer in immersion and inclusive education. A school administrator at Zeeland Christian School (ZCS) for 29 years, Bill was instrumental in establishing addalingua’s first dual language immersion partner program at ZCS.

A proud grandfather of immersion students and a believer in the capacity for language to open new doors of opportunity and relationships, Bill continues to champion dual language immersion and works to help schools develop innovative solutions for secondary education. Bill loves a challenge and is open to the next big thing.




dual language education school superintendent
superintendent, Holland Public Schools

Dr. Brian Davis is the 12th superintendent of Holland Public Schools, and a member of the addalingua academic leadership board. He is a first generation college graduate having earned his Bachelor of Science in Education from Central Michigan University. After teaching for three years, Brian completed his Master of Arts from Eastern Michigan University in K-12 School Counseling and was a middle school counselor and teacher for four years at Zeeland Public Schools. He moved on to become the elementary principal of Holland Public Schools, and then the Superintendent of Schools. He ended his impressive educational background with a Ph.D. at Western Michigan University where he received a Doctor of Philosophy in Educational Leadership, Research, and Technology.

Brian Davis values traveling and enjoys learning about the culture of each country and understanding the education system each country provides to its children.

business advisors

business advisor

Peter G. Ruppert is a veteran in the education industry.  Over the past 20 years, he has opened over 100 schools and acquired more than 25 others.  His experience in education spans president and CEO roles of organizations in the private school, charter school, and early education industries.  He also served as a public school board member in his local community for 5 years.

Pete is currently the founder and CEO of i-Education Group (formerly Fusion Education Group). Launched in 2007, the company made five acquisitions in its first two years. Today, there are more than 55 Fusion campuses in operation around the nation.