I would say if you're accepted to a college/uni and are kind of set to start in the fall then...meh, sure. Back when I got my Chase student card I really don't remember there being any sort of verification process but that might have changed. If it seems ethically dubious feel free to wait until you got books in hand. 
As long as you're 18, they won't really check to see if you actually are a student. I got my first CC shortly after I turned 18 and I had just graduated from high school. You just need to have sufficient income and you'll be good.
Starting Score: 760
Capital One has a student Journey card and they approved me with no credit history at all. I would give that a shot. I started with a $500 limit and it even gives 1% cashback. I was in the credit steps program and after my 6th statement cut, I was bumped up to $750. After that you probably wont see any more increases because Capital One is conservative, but they'll approve you when no one else will. I would suggest getting that and using it for 6 months to 1 year and then applying for a better card. It's been 9 months since I opened that card and since I've been able to get Amex Zync, Discover More, and Bank of America Cash Rewards. Good luck!
EDIT: They actually don't ask for any student information on the application so people who aren't students can get this card as well. My mom got it when she was rebuilding and had no revolving credit. Just throwing that out there for people who aren't students, but have little to no credit history or damaged history 