DrewNo option for taking the class during the summer?
Nope, class doesn't exist over summer.
brownymasterMana, you should be able to contact a counselor or something to get you added in. There's always PTE's and stuff to get into a class (I'm in a huge public school too, UCLA) and there are many priority ways to get seniors into classes. I didn't get into 2 classes I needed but emailed some counselors to get into them. If they won't do anything for you then yeah they're fucked up, but I'm pretty sure they're not going to delay a senior like that.
The problem is I'm not a senior anymore, I'm not even a student, I have to RE-ENROLL as a temporary student if I want to graduate. It's Berkeley, they're pretty unforgiving on letting people fuck up. Which is more or less how my college experience was.