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.  

Jane Berentson

Jane Berentson is a public school teacher.  She has taught middle school and high school Spanish, in Brooklyn, Staten Island, and Manhattan.

Since 2012, Jane has worked at NYC Lab School for Collaborative Studies in Chelsea.  In addition to teaching all levels of Spanish at Lab, Jane founded and coached the girls varsity flag football team, served as Coordinator of Student Activities, and has worked on numerous teams, committees, school-wide events and projects.

Outside of her teacher life, Jane is a longtime practitioner of the Brazilian martial art, capoeira.  As a high-level student of Brooklyn’s own Mestre Foca of CapoeiraVida, Jane has helped teach capoeira for both kids and adults.  The group performs widely at Brooklyn Community events.

Before Jane became a teacher, she published a novel with Viking Penguin books.  She’s been working on other manuscripts for a very long time and hopes to finish a young adult novel before her children are young adults.

Jane is married to literary agent and children’s book author Stephen Barr.  Their son is a PSS alum and their daughter is currently in the 3s class.  

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 is 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.

Robert J. Weaver, Treasurer

Robert J. Weaver is a partner at the accounting firm RSM US LLP in New York, New York where he advises private equity firms and corporate entities on merger and acquisition transactions. Rob is a certified public accountant in the state of New York and has been practicing public accounting for over 18 years. Rob received his Bachelor of Business Administration from the University of Massachusetts at Amherst.

Rob is married to Jennifer L. Brillante-Weaver, an attorney with The Legal Aid Society’s Juvenile Rights Practice in New York County where she represents children in child abuse and neglect, voluntary placements, destitute child, adoption, custody and juvenile delinquency matters. Rob and Jen have one child who is an alum of the Park Slope Schoolhouse and are actively involved in volunteer and charitable services in the surrounding community.

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!

Sunita Paul

Sunny works as a Senior Clinical Trial Manager for Global Clinical Operations at The Janssen Pharmaceutical Companies of Johnson & Johnson.  

Sunny’s two older children, now in middle school and elementary school, are PSS alum.  Her daughter 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!

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