The Sunset Region consists of large schools in the western parts of Las Vegas and North Las Vegas and Pahrump, Nevada.
For the 2008–09 school year, the conference welcomed two new members, Pahrump Valley High School from Pahrump, Nevada who moved up from the class 3A and Desert Oasis High School which opened in southwest Las Vegas in the fall of 2008.
[1] Pahrump Valley is a full member of the Southwest Division in all sports.
[3] The Meadows School has affiliate member status in boys and girls' tennis.
The Sunset 4A Region sponsors thirteen sports divided into three seasons: Fall, Winter, and Spring.