Lakeside High School 3801 Briarcliff Rd NE, Atlanta, GA30345 Lakeside High School is part of the DeKalb County School System. It is located in the Briarcliff area and is considered…More one of the better-performing public high schools in the county. It has occasionally been listed among the best high schools in the nation in Newsweek magazine. The school also has a diverse student body. About half is white, about 28 percent is black and about 19 percent is Hispanic or Asian.