Sending ACT score after application??

I applied EA to Northeastern in early November, however I just took the ACT in December to improve my scores for a few RD schools. I want to use one of my free score sends to send to Northeastern, but is this a bad idea? Will it be reviewed? Will it reflect on me badly because they’ll assume I wasn’t prepared?

My idea was that I already have that free score send, why not send it, and if they use it, then great. As long as it doesn’t affect my application negatively?

I don’t know if Northeastern accepts the December ACT test for EA apps…so check that first.

If they do, and if you send it sight unseen, what if your score goes down? Would you want NEU to see that?