The "Circle Drive" on the west side of the school was greatly reduced in size to make room for the new classrooms and foyer.

Buffalo Grove High School won a 1999–2000 Blue Ribbon Award for Excellence, presented by the United States Department of Education.

[8] The school sponsors interscholastic teams for boys and girls in basketball, cross country, golf, lacrosse, gymnastics, soccer, swimming & diving, tennis, track & field, volleyball, and water polo.

In 2011 the school inducted a co-ed competitive cheerleading team to perform at athletic games and compete in the winter and spring.

[9] Buffalo Grove supports 47 student clubs and activities, an entire and updated list of which can be found at the school's website.

Among the clubs are chapters of these more nationally notable groups: NJROTC, SADD, Scholastic Bowl, Science Olympiad (which won the Illinois State Championship in 1989, 1990 and 2024), and Mathletes.