Board of Directors
Ellen Sweeney
Chair
Ellen is a People Operations Executive and Consultant supporting early stage and high growth companies in implementing People strategies for optimal business growth. She partners with clients on employee relations and engagement, learning & development, core values and culture, performance management, hiring, and anything else needed across the span of the employee life cycle.
Prior to starting her consulting practice, she spent ten years in high growth CPG companies leading human resources, recruiting, and company culture. When Ellen is not navigating all things People, she can be found running at Prospect Park or enjoying life with her daughter, a current class member at PSS, and partner Brad Johnson, a commercial Executive Producer.
Oliver Bystricky
Oliver Bystricky is a VP of Business and Legal Affairs at Paramount, where he advises on distribution of the company’s iconic portfolio of television networks (including BET, CBS, Comedy Central, Nickelodeon and Showtime), and serves as co-chair on the General Counsel’s DEI Committee.
He earned his BA at Boston College, his JD at Brooklyn Law School, and was previously an associate at two leading multinational law firms where his practice was focused on media, tech and intellectual property transactions.
Oliver is married to Heather Walczuk, an LCSW who’s spent the last 15+ years advocating for the wellbeing and safety of vulnerable and under-resourced populations, and currently works in Trust & Safety at Patreon. Their son attends PSS – class of ’26 – and can often be found practicing his dance moves with mom or strumming a guitar with dad!
Andy Schwenk
Andy Schwenk is Assistant General Counsel at the NYC Department of Consumer and Worker Protection. Andy works on policy, regulatory, and legislative projects related to consumer protection, business fraud, and fair business regulation. Andy also serves as the General Counsel of a small residential real estate company. Previously, Andy worked in litigation for a large corporate law firm and clerked for two federal judges. He received his law degree from Brooklyn Law School.
Andy is married to Chloe Thompson, who works at Bombas as VP of Strategic Initiatives. Andy and Chloe have one daughter, Nina, and an alum, who loved being a student at Park Slope Schoolhouse. They also have a dog named Noodle who is a frequent attendee at pick-up, and a cat named Quailman who has never left the house.
Lyn S. Hill
Lyn S. Hill is the former Vice President for Communication and External Affairs at New York Methodist Hospital. She received a BA and an MA from Queens College and a PhD from the City University of New York.
Over the years, Lyn has been active in numerous community organizations, including the Park Slope Civic Council and the Brooklyn Chamber of Commerce. She was president of the board of the MHB Childcare Center and later a member of the board of the Berkeley Carroll School, during the years after Berkeley Carroll took over the Child Care Center. She has been a member of the board of the Park Slope Schoolhouse since it became an independent organization.
Following her retirement from the Hospital, Lyn became a certified SCORE mentor and currently counsels people hoping to start or expand small businesses and non-profit organizations. She is also recording secretary and a member of the executive board of Independent Neighborhood Democrats.
Lyn was married to the late Forbes I. Hill, a professor of media studies at Queens College. Their three grown children have, to-date, produced seven grandchildren.
Meg Glick
Meg is a Licensed Clinical Social Worker specializing in childhood ADHD, anxiety, and disruptive behavior disorders. She holds a BA from the University of Pennsylvania, an MSW from Hunter College, and an MSEd from Bank Street College of Education. Prior to starting her own practice in 2020, Meg was a clinician at the Child Mind Institute in Manhattan. She also previously held a role within NYU’s Center for Early Childhood Health and Development focused on the enhancement of classroom-wide behavior management, social-emotional learning, and family engagement strategies within Pre-K classrooms. Most importantly, Meg is also mom to Oliver (PSS 1s Class).
John Kim
Vice Chair
John is a Partner at Microsoft, where his team brings financial service providers and fintech together to build the future of financial services to everyone. John’s two older children are PSS alums, currently attending PS 10, and his daughter is in the 2s class!
Andrea Ryken
Andrea works as Senior Counsel at Hearst.Andrea’s son is currently in the 2s class!
Jennifer Yang
Jen is on the Consumer Strategic Engagement Team at American Express and works on product, strategy, marketing and partnership initiatives. She previously worked in communications for 7 years at FleishmanHillard. She holds an MBA from the NYU Stern School of Business and a Bachelor of Commerce from McGill University. Jen has two sons – one in the 2s class and another soon-to-be in the 1s class!
Rebecca Johnides
Rebecca is a Client Solutions Consultant at UpSlide. Rebecca’s son is currently in the 3s class!
Rebecca Johnides
Rebecca is a Client Solutions Consultant at UpSlide. Rebecca’s son is currently in the 3s class!
