[3] The Rockefeller Philanthropy Advisors donated a $70,000 grant to assist the Williamsville Poetry Music Dance Celebration, begun at Williamsville East in 2000 by band director Dr. Stephen Shewan and English teacher Mr. John Kryder.

[5] On November 6, 1985 the boys' gymnastics team set the New York State Public High School Athletic Association Boys' Gymnastics Team competition record, scoring 158.4 points.

The record stood unbroken for the entirety of New York State high school boys' gymnastics history.

Their team finished its 2014 season with a shared sectional title with Williamsville South High School and a 12–0 record.

[6] In March 2016, the school came under fire for a racially charged Islamophobic bullying incident.