Clueless is a 1995 American comedy film loosely based on Jane Austen's 1815 novel Emma. It stars Alicia Silverstone in the lead role, Stacey Dash, Paul Rudd and Brittany Murphy. The film is set in the town of Beverly Hills and was written and directed by Amy Heckerling and produced by Scott Rudin, it was released in the United States on July 19, 1995 (Wikipedia).
The locations for this film have already been found at the wonderful filming location websites below which also include the other LA locations. This post would not be possible without their excellent research so please check them out and support their cause.
The interior shots of Bronson Alcott High were actually filmed at Grant High School at 13000 Oxnard Street Los Angeles CA 91401.
I am not sure about some of the outdoor scenes of the high school as they were actually filmed at Occidental College but this one scene may have been at Grant High School based on the hills in the background.
Cher's house is located at 5148 Louise Avenue Encino CA 91316.
The Valley party house was filmed at 16401 Knollwood Drive Granada Hills CA 91344 which was recently sold and discussed here.
Cher gets left behind at Circus Liquors on 5600 Vineland Avenue North Hollywood CA 91601.
Tai is almost tossed over the baloncy railing at the Westfield Fashion Square on 14006 Riverside Drive Sherman Oaks CA 91423.