Can I still pay for a permission slip after the school year has changed?
Yes. If you completed a permission slip while your student was enrolled and still owe a cost for it, you can pay that cost even after the school year changes. Use the link in your permission slip email or payment reminder; it will take you to the page where you can pay online or, if your school allows it, choose to pay by cash or check.
The same is true for store orders you placed earlier and chose to pay for by cash or check. What you can't do is start something new, such as a new purchase, a dues payment, or a permission slip you hadn't completed yet.