An item is eligible for for Buy Now, Ship Later if it includes the following "SHIP TO YOUR SCHOOL" icon on its product page under the ADD TO CART button:
After adding all desired items to your cart, you can confirm the eligibility once again if the products list “ELIGIBLE FOR BUY NOW, SHIP LATER” in the shopping cart pop-out screen. If you see an item in your cart marked “Not Eligible For Buy Now, Ship Later,” it is made to order and ships separately. These products cannot be included in an order shipped on a future date.
For ineligible items, we suggest clicking the Wishlist heart and saving it for a future purchase! All ineligible items must be removed from your cart before proceeding with Buy Now Ship Later.