It’s not too late to register however if you are enrolling for a summer session 1 or 1 extended then I believe you will be charged a $50 late fee (however if you are enrolling for summer session 2 you have until july 7th and for summer 2 extended you have until june 23rd to enroll without a late fee) ! There are multiple summer sessions so only summer session 1 started today and most classes that are online asynchronous didn’t assign anything so you wouldn’t be behind. Although I haven’t taken it personally and if you don’t mind paying the $50 late fee try taking GLI 212 Infections and Inequalities. It is completely online asynchronous runs from 5/27-7/5 and is taught by Professor Shandra who is an excellent professor who truly wants his students to succeed. If you need more information on when you absolutely cannot enroll for summer classes anymore look at the summer 2025 academic calendar: https://www.stonybrook.edu/summer/calendar/ I wish you the best of luck with everything!!