Peachtree Ridge High School is a public high school in Gwinnett County, in Suwanee, Georgia, United States. It is a part of Gwinnett County Public Schools. It is the only public school in the county to use block scheduling; Shiloh High School did at one point, but discontinued it in 2008.Construction of the 418000sqft school's main facility commenced in March 2001. PRHS was constructed to relieve overcrowding at four neighboring high schools. When its doors opened for the 2003-2004 academic year, almost all of the sophomores, juniors, and seniors came from either Duluth High School in Duluth, Collins Hill High School in Suwanee, or North Gwinnett High School in Suwanee.The school officially opened for classes on Monday, August 11, 2003, with enrollment topping 1,900 students. By November of the same year, another 19570sqft of athletic facilities (field house) were nearing completion.HistoryPeachtree Ridge High School is located on Old Peachtree Road. It is located on land which belonged to the heirs of Eugene Baynes. A lake behind the school is named Lake Louella after Eugene Ella Baynes, as is Lake Louella Road near the school. A few hundred yards from the school is the Goodwin home, which was built in 1823 and is the oldest building in Suwanee.