- Why Happy Valley
Leadership
Director of Happy Valley School
Meet Michael Gaddie
Welcome to Happy Valley School!
It is an honor and a privilege to serve as the Director of a school that is so deeply rooted in family and our community. As a third-generation educator, I am proud to continue the legacy my grandparents began when they opened Happy Valley School in 2000.
For more than two decades, Happy Valley School has been committed to excellence in education while creating a caring and supportive environment where students can thrive. Our success is made possible by the dedication of our exceptional staff, the enthusiasm and hard work of our students, and the partnership of our wonderful parents.
I am grateful for the opportunity to help carry our family’s vision forward and look forward to continuing to build on the strong foundation that has made Happy Valley School such a special place.
Thank you for being part of the Happy Valley family.
Principal of Happy Valley School
Meet Mrs. Jeannine McDonald
As Principal of Happy Valley School, Mrs. Jeannine McDonald brings a deep passion for fostering students’ academic achievement and personal growth. Her extensive experience spans a wide range of educational settings, including private, public, and charter schools, providing her with a broad and well-rounded perspective on student success.
Mrs. McDonald holds a Master of Arts in Psychology from Assumption College in Worcester, Massachusetts, and a Bachelor of Science in Education from Lesley University in Cambridge, Massachusetts. Her academic background, combined with her professional expertise, reflects her unwavering commitment to education and student development.
With more than 20 years of leadership experience across Kindergarten through Grade 12, Mrs. McDonald has served in a variety of influential roles, including as the Founding Head of a private high school. In addition to her leadership, she is an accomplished classroom teacher with a strong foundation in curriculum design, instructional practices, and student assessment. Her dedication to creating an exceptional educational environment is rooted in a commitment to excellence, academic rigor, and meaningful support for both students and staff. Mrs. McDonald believes in cultivating not only strong scholars but also individuals of character, integrity, and leadership—preparing them to become lifelong learners and responsible contributors to their communities.
Mrs. McDonald values the essential partnership between school and family, recognizing that collaboration is key to supporting each child’s academic and personal journey. She believes that providing students with an outstanding educational experience is one of the greatest gifts we can offer, as it equips them with the knowledge, confidence, and character needed for success in life.
Coordinator at Happy Valley School
Meet Sonia Saenz-Camilli
Mrs. Sonia Saenz-Camilli brings more than 17 years of experience in education and a passion for helping students develop the knowledge, confidence, and character needed for lifelong success. She holds a Masters of Arts in Elementary Education and a Bachelor of Science in Business Management from both Arizona State University and the University of Phoenix.
Throughout her career, Mrs. Camilli has served in a variety of educational leadership and teaching roles across multiple grade levels, gaining extensive experience in curriculum, instruction, student achievement, and school improvement. Her dedication to educational excellence led to her selection for Arizona’s prestigious RODEL Aspiring Principals Program, which prepares emerging school leaders to positively impact students, staff, and school communities.
At Happy Valley School, Mrs. Camilli serves as the Title I Coordinator, English Language Learner (ELL) Coordinator, Assessment Coordinator, Teacher Mentor and Administrator. She works closely with students, families, and staff to support academic growth, oversee school programs, and ensure every child has the opportunity to succeed.