hey man, im doing the samething. college and going after the same degree, but i never thought about quitting. thats actually the stupidest move you could do if you think about it. if you quit UPS, whats your backup? because college is definitely not a guarantee for employment afterwards. and i dont mean to be a driver either. UPS has a tech department where your branch of engineering could probably be useful(i know mine is).
i got confused where you said you usually arrive late as hell. i am usually on time with enough sleep for work and i've been attending my school for over a year now, a solid 3.6 GPA, too. no complaints either. i dunno, maybe its more about who the individual is and what the priorities are.
so if you're gonna quit, make sure you've thought it through well. not alot of companies can provide what UPS can
The reason I arrive late 2 days a week is due to class schedule conflict. Also, do you go to a university or a smaller school / technical school. Most people at my work go to Columbus State or something like that, so they aren't as involved. Also, are you living on campus? I'm paying 8,000$ / year to live on campus with the explicity purpose of enjoying college life. But working 4-5 days / week kinda takes the point out of that...