This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well. It will help if you know how to read 卒業 already as a word, too.
After the graduation ceremony, let's take a photo on the bridge together!
Huh? Did you say that Beyoncé came to the graduation and sang for you guys? No way! You must be joking!
I’m so excited for the trip after our graduation ceremony! Let’s relax in the hot springs and eat a lot of local delicious food. By the way, just making sure but you made a reservation at the cottage, right?