Yes, you can purchase as many of the same school/child pack/s as you need. For instance, if you have multiple children in the same grade, you can order multiple packs of the same type.
Note: You can't modify or delete the mandatory items from the child/school packs. However, you can increase the quantity of the products in the packs.
If you need further assistance or are having issues in ordering, please contact COS customer service on 1300 614 133 or via email on parentportal@cos.net.au.