This push for expansion started after the community became frustrated about spending much money to send their children to local high schools including Port Chester, Mamaroneck, Rye Neck, and Valhalla, without commensurate representation or influence on those districts' policies and programs.

In addition, the Ridge Street School, which housed classes from kindergarten to 8th/9th grades, was becoming overcrowded and could not accommodate the growing population that would become known as Rye Brook (in 1982).

Land was purchased on King Street, and construction was started in 1972 and ended in late 1973, months into the school year.

A parent-school district committee, called "Let's Bond for our Kids", formed a construction plan and encouraged the community to get involved and vote for funding to build a separate middle school wing.

To this day, the modular classrooms, or as they are often called, the portables (though they cannot be moved), are still used for daily classes and are fairly popular among the student body.

In addition to expansion of the building, in order to meet state fire codes, the construction also resulted in traditional, four-walled, closed classrooms.

[13] Three International Baccalaureate classes (12th grade English, 11th grade Chemistry, and Theory of Knowledge) were added in order to create a more difficult and challenging baccalaureate curriculum, though after months of discussion and debate, the Board of Education voted 4 to 1 against the continuation of the program in March 2003.

[15] Chlebicki left Blind Brook for the North Shore School District on Long Island to become the Assistant Superintendent for Instruction.

A new strategy was put into action by the Board of Education to investigate the AP program and to see if it would be a good fit for BBHS.

In addition to new AP classes, Blind Brook, in the 2005–06 school year, also added Latin as an elective.

Construction, however, did not start until late 2005, around October, because of problems with architectural plans and a slow permit approval by the New York State Education Department.

In the 2005-06 phase of construction, a new middle school cafeteria, fitness center, science labs, HS and MS classrooms, and new athletic fields were built.

The Village of Rye Brook, New York, at the same time, was building their fields adjacent to the BBHS campus.

The Board of Education hired William Stark in June 2007 as the interim principal until a permanent replacement was found.

[32][33] On July 1, 2010, Gina Healey became the sixth principal of Blind Brook High School in seven years.

Blind Brook signed a letter to Newsweek saying that it didn't want to be on a list that ranks high schools based on the ratio of students who take advanced-placement exams.

These procedures require that both new and pre-existing clubs submit a complete list of members in order to obtain a one-year charter allowing them to operate.

In addition to print, Blind Brook operates a cable television station through BBTV, the school's video club.

[43] Blind Brook students are well known for their commitment and enthusiasm towards improving the community, and often surpass the 80 hours required to graduate.

The club has worked on numerous construction sites helping build homes, clean up debris, and paint churches.

Each club uses bake sales, movie nights, and other creative means to expand the knowledge of other cultures and people.

Blind Brook houses many academic clubs whichll strive to further educate students about topics of interest and expose them to different activities.

The Blind Brook Mock Trial Trojans have won the Westchester County Championship at least twelve times, in 1994, 1995, 1998, from 2004 through 2007, 2011, 2013, 2014, 2018, and 2023.

[64] The team won back the Westchester champion title in 2011, beating Rye Neck High School.

Most recently, the team defeated Edgemont High School in the 2023 Championship, with Captains Melina Kohilakis, Brooke Sosin, and Jackson Weinstein.

[65] In each year the team captured the county title, Blind Brook moved on to the regional competition.

Blind Brook is in Region IV, the Lower Hudson Valley, which is made up of Westchester, Rockland, Orange, Putnam, Sullivan, Dutchess and Ulster County.

[66] In the years that Blind Brook captured the regional title, they moved onto the state level of the competition in Albany.

[67][68] The Blind Brook Model United Nations club attends several conferences throughout the school year.

[69] The Blind Brook student government is split up into four organizations: Congress, Senate, a Shared Decision-Making Team, and class officers.