You're not the only one surprised how easy it is to be drunk & educated.
I'm a senior too (last year, whatever) and I didn't even try to get sober most of it. And I don't have bad grades, to say the least.
Don't worry about how your hubby doesn't understand... just love him and understand that he might never understand. Addiction is hard to see from the outside, from everything I can gather here... Kinda like how from the inside, it's hard to see how 'a couple beers is all' is a viable goal for a weekend.
Political science/ behavioral science. How am I going with it? DK what that means, but I'm doing quite well... working on grad school apps. Ugh.