Sherry Ma joined the Roslyn School District in 2020 as the Principal at East Hills School. In her role, she provides support for all the students, families, and staff in the East Hills school community. Prior to her appointment at Roslyn School District,  Ms. Ma worked as a principal in the East Rockaway School District from 2016-2020. She began her education career as a 5^th grade classroom teacher in the Kings Park School District, then later held a position as a Gifted and Talented teacher for grades 3-6 and as an Assistant Principal in the Merrick School District. Ms. Ma holds a bachelor’s degree from Cornell University in Policy Analysis and Management, a master’s degree in Elementary Education from Queens College, and earned certifications in School Administration from Stony Brook University. Prior to working in education, she worked in finance at Goldman Sachs.

Jennifer Sheehan joined East Hills in 2022 as Assistant Principal. In her role, she provides support to all students, families, and staff in the East Hills school community. Ms. Sheehan has been part of the Roslyn School District since 2004. She began her career in Roslyn as a Spanish teacher at the high school, where she taught from 2004–2016. She then served as World Languages Chairperson in 2016 before later becoming an Assistant Principal at the middle school in 2018. Earlier in her career, she also taught middle school Spanish at JHS 157 and both Spanish and French at Westbury High School. Prior to entering the field of education, Ms. Sheehan worked in translation and interpretation. Ms. Sheehan holds a Bachelor of Arts in Spanish with a minor in French, a Master of Science in Spanish Secondary Education, and an Advanced Certificate in School District Leadership from LIU Post.