Beijing no.11 high school Tianjin Experimental School Huachen Experimental Primary School. Official website, Education Bureau of Beichen District, Tianjin, inquired that the accompanying children were enrolled in Huachen School, Experimental Primary School and Tianjin Experimental School of Beijing No.11 School in this district as a whole, and each school district implemented the "six-year one-degree" system, that is, only one immediate child corresponding to the household registration was allowed to enroll in each school district within six years. Early childhood is the abbreviation of kindergarten or preschool children entering primary school.