Naugatuck High School is a public high school (grades 9–12) in Naugatuck, New Haven County, Connecticut, US. The old high school, now an intermediate school, was located on Hillside Ave. The new school is located at 543 Rubber Avenue. The building was constructed in 1959. Three wings were added during the 1970s: Castle House, Goodyear House, and the Applied Education Wing, which contains all the shop classes. The main building then became known as Judd House. Recent renovations have resulted in a re-brand of the wings of Naugatuck High School. Judd House is now known as North, Castle and Goodyear Houses have combined to become South, the Applied Education wing is East, and the gym, auxiliary gym, and pool make up West. The original building, located on Hillside Ave., was built in 1905 by McKim, Mead, and White and then was the Hillside Middle School until the 2010–2011 term when it became Hillside Intermediate School.
The school mascot is the greyhound and the school colors are garnet and grey. Naugatuck competes against other high schools in the Naugatuck Valley League. These schools include Wilby, Kennedy, Holy Cross, Crosby, Sacred Heart, Waterbury Career, Watertown, Torrington, Derby, Ansonia, St. Paul, Woodland Regional, Wolcott, Seymour, and Oxford.
NHS has a storied football rivalry with the high school in Ansonia that is one of the longest in America. Like the other high schools in the Naugatuck Valley, the two teams meet the morning of Thanksgiving Day. The first meeting was in 1900. Ansonia is the long-term winner in the series.
In 2009, the school added solar panels to its roof.
In 2013, the school began an $81 million renovation project that updated the schools interior and exterior, as well as added new technology. The project was completed in the fall of 2015.