School Leadership
Rabbi Marshall Lesack '97
Head of School
Rabbi Lesack is an educational and organizational leader with senior management experience in both the formal and experiential education fields. From 2015 to 2021, he served as the Principal of the Claire and Emanuel G. Rosenblatt High School at Donna Klein Jewish Academy. During his tenure, he led the development of the school’s specialized programs in medicine, engineering, and law, redesigned the Judaic Studies curriculum, and oversaw the growth of student life programming and enrollment in the high school.
In addition to his work in the school environment, Rabbi Lesack previously served as the Assistant Director of Camp Ramah Darom and worked as an educational and organizational consultant for summer camps. An educator at heart, he has taught teenagers and adults in a variety of educational settings over the past 20 years.
Rabbi Lesack is passionate about Jewish day school education and strives to create environments and communities where young people are valued, supported, and able to become the leaders of tomorrow. He was a YOU Lead fellow with Prizmah and completed the Art of Leadership at the Harvard Graduate School of Education. A proud graduate and alumnus of Akiba Hebrew Academy (‘97), Rabbi Lesack holds degrees from Rutgers University and the Jewish Theological Seminary of America, and has also studied at various institutions in Israel.
Matthew Dorsch, Ed.D. '05
Director of the Middle School
Matthew Dorsch '05 is committed to supporting and challenging each individual student, nurturing their academic, social, and emotional needs. A proud alumnus of Akiba/Barrack, Matthew has served as a dedicated Barrack faculty member for over 10 years in capacities including director of learning support, resource department chair, and learning specialist. Matthew was chosen as a 2022-2023 Fellow in the Prizmah YOU Lead Program, a selective leadership training program for outstanding educators and administrators across North America. Matthew graduated cum laude from the University of Pittsburgh with a bachelor's degree in architectural studies, a certificate in Jewish studies, and a minor in studio art. He also holds a dual master's degree in elementary and special education from La Salle University. He has an interdisciplinary doctorate in educational leadership from Saint Joseph's University with a dissertation focused on the relationship between learning management systems and executive functioning skills.
Missy Present
Director of Admissions and Enrollment Management
Missy is a seasoned enrollment management professional, most recently serving as chief enrollment officer for The Jewish Theological Seminary in New York City. For 14 years, Missy oversaw multiple departments at JTS, including the recruitment teams for their undergraduate and graduate schools as well as their financial aid operation. Missy graduated with a B.A. in Communication Sciences from The George Washington University and currently holds various leadership roles and board positions in Jewish organizations within the Greater Philadelphia community.
Alex Stroker
Chief Operations and Development Officer
Alex has spent nearly 25 years working in the Jewish community in various leadership capacities, including his 5 years at Barrack. He previously served as Chief Marketing Officer, Chief Operating Officer, and Interim Chief Executive Officer at the Jewish Federation of Greater Philadelphia. A graduate of Penn State University, he is responsible for business and finance office oversight, facilities management, transportation, and security. He is also primarily responsible for all annual, short-term, and long-term restricted fundraising efforts. Alex holds a B.S. in Marketing and Advertising from Penn State University.
Rebecca Trajtenberg
Director of the Upper School
Rebecca began her career in education as an admission professional, working at colleges in New York and Pennsylvania before joining Barrack’s College Counseling Office in 2009. She served as its director beginning in 2014 and assumed broader responsibilities as Dean of College Counseling and Student Affairs in 2020. A product of Jewish day school herself, Rebecca is passionate about Jewish education and fostering a community where students are challenged to stretch themselves academically while being supported in their growth as individuals and learners. She earned a B.A. from Muhlenberg College and an M.S. Ed. from the University of Pennsylvania.
Olga Voskoboynik
Director of Finance and Human Resources
Olga serves as Barrack’s Director of Finance and Human Resources after working for more than 25 years as its Controller and Human Resources Director. She has more than 39 years of overall experience in finance, economics, fiscal impact and cost analysis, financial modeling, mergers and acquisitions, and Human Resource management. Her experience includes working in various companies as a Financial and Sustainability Analyst, Mergers and Acquisition Consultant, VP of Finance and Economics, and Director of Finance at KTI Group Inc. Olga holds a Master’s degree from Prague University of Economics and Business.