Grace Yee, Executive Director

Ms. Grace joined Challenge School in 2009 and become Challenge School preschool director in 2010. Before working as a teacher, Ms. Grace has over 10 years of experience in engineering and product management. Ms. Grace received an MS Engineering, an MBA from UC Berkeley Haas, and an Early Childhood Program Director permit from California Department of Education.

Mei Zhang, Founder and Executive Director

Ms. Mei was the founder of Challenge School and has 10 years of teaching and educational administrative experience. Before starting the school, she was a pharmacist, practiced in China and later became an architect practiced in United States. Ms. Mei received her B.A. in Interior Architecture from Academy of Art University and her BS in Medicine from Sichuan University.

We are Hiring
We are Hiring!! We are looking for a passionate and qualified teacher to join our team!!Candadates must have a Bachelor degree, at least 6 ECE units, and bilingual. We are looking for someone who can teach and is a Mandarin native speaker. We provide attractive packages. Please send us email if you are interested (

Our Staff
Challenge School is led by a team of experienced administrators.  We are friendly and passionate about bilingual education for young children.

Sia Sanft, San Mateo Preschool Head Teacher

Ms. Sia is our Preschool head teacher for our San Mateo campus. Ms. Sanft received her B.A. degree in Education from Brigham Young University as well as a Early Childhood Education certificate from UCLA and Kern Community college.

Kaily Chang, Belmont Campus Director

Ms. Kelly has been teaching at Challenge for since 2006. She has over twenty years of teaching experience in Mandarin. Ms. Chang received her BA degree in Chinese from Chongshin University, and persuing her AA degree in Early Childhood Education in Canada College.

Established since 2003, served over thousands of students