The current Superintendent is Edward A. Salina Jr.[2] The school board is currently composed of President Lynnda Nadien and Vice President Raymond Paris; and trustees Jennifer Maggio, Joseph Beyrouty, Joseph Netto, Sonny Spagnuolo, and Sisi Townson.

[3] The principals of the elementary schools are Mark Coccarelli (Eastplain),[4] Joseph A. Maisano (John H. West),[5] and Jennifer Thearle (Schwarting),[6] with Sara Azizollahoff serving as assistant principal at all elementary schools.

[citation needed] On February 19, 1985, the Plainedge School Union's Board of Education was sued by Carl McCall for a refusal to promote her allegedly based on her gender.

[12] As a result of school closures caused by the COVID-19 pandemic, the district arranged a community effort to turn on stadium and porch lights between 8:20 and 8:40PM on May 1, 2020 to honor the graduating senior class.

Former schools include Robert E. Picken elementary, which was sold to the Town of Oyster Bay to serve as a smaller town hall for the southern part of the town; Northedge Elementary (then a kindergarten), which was knocked down to make room for the new middle school; Baldwin Drive Elementary and Southedge Junior High, which were demolished and the land sold for housing; and Sylvia Packard Middle School, which was closed after 40 years.