Yes, you can easily modify/amend the product quantities in the school packs by logging in to the Parent Portal. You can amend/modify the quantity of each item for kindergarten/prep, Year 1, Year 2, Year 3-4, Year 5-6, and Year 7-8. For more information, please contact COS customer service on 1300 614 133 or via email on parentportal@cos.net.au.