Formation North Shore Central School District was formed in 1953 from the smaller Sea Cliff, Glen Head, and Glenwood Landing school districts. The merger was generally opposed by Glenwood Landing residents, who did not want to share the tax revenues from the
Glenwood Generating Station, while the other districts were desirous of them. An earlier vote that year on
consolidating the districts failed because that process required the vote to succeed in all three districts individually, while the
centralization process only required a simple majority across all voters. It was the first
central school district in Nassau County, and was accordingly referred to as "Central School District No. 1" under the numbering scheme of the time. Glen Head School had been built in 1924. Glenwood Landing School's "Old Building" had been built in 1927 The Glenwood Landing and Glen Head Schools did not provide high school education, and their students attended high school in Sea Cliff,
Glen Cove, or
Roslyn. The first new building opened by the district was the six-classroom Kissam Lane School in 1956, which would later become North Shore Middle School. Initially a K–3 school, it was designed by
Vincent Kling and won national architectural awards for its openness and simple, compact design, with floor-to-ceiling windows and an exterior doorway in every classroom. In 1960, the construction of the junior high school on the site was approved, with the Kissam Lane School incorporated into the new building. It opened in 1961. but it opened in 1957; it, too, was designed by Vincent Kling. An addition was made to the Glenwood Landing School in 1965. The most major work included demolishing and replacing the north and south wings of Sea Cliff School. Additionally, an addition was constructed to Glenwood Landing School, and North Shore Middle School's cafeteria was expanded. This led to fears of a 15–19% increase in residential taxes in late 2014. However, it was determined that according to state law there could be no more than a 1% increase in property taxes for a given tax class as a result of a decreased tax assessment in another class (the four tax classes being residential, cooperatives/condominiums, commercial, and utilities). The financial effects on the district would thus have to be mitigated by increased taxes on remaining utilities in the district, as well as a $2.5 million one-time grant from the state arranged by local state legislators. The site's municipal and school
payments in lieu of taxes fell from $23.2 million in 2012 to $16.6 million in 2015. == Schools ==