University High School in Los Angeles was used for George Michael and Maeby’s school.

Actual locations, rather than sets, were used on Arrested Development whenever possible. Many of the recurring interior sets were housed at Culver Studios in Culver City, CA, so locations in Culver City and the surrounding communities of Marina del Rey and the rest of the greater Los Angeles area make frequent appearances. What follows is a partial list of filming locations used in Arrested Development.

Marina del Rey, California

Marina del Rey lighthouse behind the Banana Stand.

Although many scenes in the show are set in Balboa Island in Newport Beach, California, most of the scenes set in Balboa Island actually take place in Fisherman’s Village (renamed Oceanside Wharf in th show) in Marina del Rey, California. Scenes involving the Bluth Banana Stand, as well as many of those involving boats take place there.

source: https://arresteddevelopment.fandom.com/wiki/Filming_locations