Grand Avenue Middle School is one of two middle schools in the Bellmore-Merrick Central High School District. Children in grades 7 and 8 attend this school.

Lewis J. Serra serves as the principal of this school.

Student Clubs: Art Club, Book Club, Builder's Club, Computer Club, Communications Club, Drama Club, International Culture/World of Difference Club, Literary Journal Club, Math Club, Newspaper, Odyssey of the Mind, S.A.D.D., Science Research Club, Sport Program, Student Council, Student Network for Cooperative Science, Technology A/V Club, Technology Club, Yearbook and Yorker Club.

Sports: Fall: Archery Intramurals, Boys & Girls Cross Country, Boys & Girls Soccer, Soccer Intramurals, Cheerleading, Kickline, Hoop It Up Intramurals, Football, Tennis and Tennis Intramurals. Winter: Boys & Girls Basketball, Boys & Girls Basketball Intramurals, Boys & Girls Volleyball, Ping Pong, Snowflake Football Intramurals, Weight Training Intramurals, Boys Volleyball, Wrestling, European Handball Intramurals and Gymnastics Intramurals. Spring: Archery Intramurals, Boys Baseball Intramurals, Girls Tennis Intramurals, Baseball, Softball, Boys & Girls Lacrosse, Kickline, Racquetball Intramurals and Rock Climbing Intamurals.