Does the subject want to ask "the starting time of Jiaocheng No.1 Middle School in 2023"? September 1. According to official website of Shandong Education Bureau, ordinary senior high schools in Shandong Province have summer holidays from July 13 to August 3 1 and start classes in September 1. Jiaocheng No.1 Middle School was founded in 1945 and is located in Jiaocheng County, Lvliang City, Shandong Province. The school has first-class teaching buildings, science and technology experimental buildings, libraries, student apartments, restaurants and other educational, teaching and living facilities in Lvliang and even the whole province.