The arrangement of tables and chairs in ordinary classrooms shall meet the following requirements: 1 The row spacing of tables and chairs in ordinary classrooms in primary and secondary schools shall not be less than 0.90 m, and that in independent incomplete primary schools shall not be less than 0.85 m; The horizontal distance between the front edge of the foreground and the front blackboard shall not be less than 2.20 m; The horizontal distance between the back edge of the last row of desks and the front blackboard shall meet the following requirements: 1. Primary schools shall have no more than 8 students. Whoo, two.