Is AP/College Board responsible for a missing AP studio portfolio?

I got an email earlier in the week with a tracking number for my portfolio. Since it was supposed to arrive yesterday I was getting nervous so I checked the tracking number and UPS said that “Merchandise is missing. UPS will notify the sender with additional details. / All merchandise missing, empty carton was discarded. UPS will notify the sender with details of the damage.”

We called UPS and they said that my art literally fell out of the box and they don’t know where it is. Is College Board required to do anything about it/are they legally responsible for my portfolio?

No. It’s UPS’ problem now.