What you want to ask is whether the school can order textbooks from private bookstores. This is not allowed.

Books for teaching AIDS selected by schools must be distributed by Xinhua Bookstore through formal channels, and schools and individual teachers are not allowed to order teaching AIDS on behalf of students at individual booksellers. The state has stricter requirements on the qualifications and channels for the distribution of textbooks for primary and secondary schools than ordinary books.

According to the Regulations on the Administration of Publication and the Regulations on the Administration of Publication Market, textbooks for primary and secondary schools are ordered and distributed by Xinhua Bookstore. Units engaged in the distribution of textbooks for primary and secondary schools shall obtain the qualification of textbook distribution approved by the publishing administrative department of the State Council, and have clear provisions and requirements for the qualification. Without permission, no other unit or individual may engage in the distribution of textbooks for primary and secondary schools.