SAT Test

i took the November sat test and I just realized that I wrote on the side of my bubbles, meaning if I found a question hard i would put letters next to my bubble so tat in case later on I ran out of time, I will be able to change my answer. But, I realized that I forgot to marks. Will college board cancel my score, if there are letter markings next to my bubbles?

Does collegeboard check the each answer sheet before they scan it?

CB won’t cancel your score, but your score might suffer from scan mis-reads.