From IMDB:
A follow-up series to the 1990s sitcom. A group of California low-income high school students are transferred to Pacific Palisades' wealthy Bayside High, following a program by California Governor Zack Morris.
From Wikipedia:
The series will center around a new group of Bayside High students from "overprivileged" and working-class families, among the latter of which were transferred to the school as part of a plan by now-California Governor Zack Morris—whose administration experiences controversy for closing too many low-income high schools—to send lower-income students to the highest-performing schools in the state.