No — John Schreiber's handedness is not confirmed by reliable public sources.

John Schreiber is an esteemed figure in the performing arts community, currently serving as the President and CEO of the New Jersey Performing Arts Center (NJPAC). Under his leadership, NJPAC has become a vibrant cultural hub.

Before his tenure at NJPAC, Schreiber held significant roles in the entertainment industry, including Executive Vice President of Programming for Jazz at Lincoln Center. His career has focused on bringing diverse and high-quality artistic performances to audiences.

He has a long history of involvement in theater production and arts management, demonstrating a deep commitment to the cultural landscape. His work has often involved overseeing major programming initiatives and strategic development for various arts organizations.

Schreiber's influence extends to cultivating new talent and fostering educational programs within the arts. He is recognized for his vision and dedication to making performing arts accessible and engaging for wide audiences.