Can Baoji be connected with Sandi Primary School?

You can't. Official website, Education Bureau of Baoji City, inquired that as of June 17, 2023, students in Baoji City should go to school according to the school district, but they were not allowed to go to primary schools in the three places because they were not in the school district. A school district usually includes one to several public schools, a primary school district may have only one primary school, and a university district may have several primary schools or secondary schools.