I'm almost done with my freshman year at a state university. Currently, it's a three way split, sort of. My parents started a 529 for me when I was younger, that has enough in it to pay about 1/3 each of my 4 years. Thankfully it still grows a bit after each withdrawl, so that helps with the fact that costs will keep rising. After that (about) 1/3 has been applied to the bill, my parents split the difference (parents are divorced). Dad says it will continue this way. Mom says it will not. We'll just have to wait and see. I did get a $1000 scholarship from the school toward tuition every year (yeah big deal), so I do have to maintain the grades for that or I'll be paying that difference out of pocket. I also got a couple small scholarships from clubs I was in last year that completely covered my books this year. I pay most of my expenses, although I've noticed that my mom has become unbelievably generous since I left for school. WHenever I go home she buys snacks for me to bring back and other things. Essentially she still covers personal needs that she would have covered if I was still home. Definitely unexpected. She also seems to thoroughly enjoy taking me shoe and clothing shopping on her

Some of the stuff I buy up here is considered "reimbursable" too. I do cover most of my expenses, including books. I worked a bit last summer (don't ask), and despite having a very full bank account (I don't spend much), am supposed to get a job this summer too. I am NOT allowed to work during the school year, which has been the rule all through school
As for grad school, that's currently a heated debate that I'm trapped in the middle of. Dad says they will pay all. Mom says it's all on me. So stay tuned
And as for the people paying for school focus more on studies, that's not always the case. I'm not actually spending any of my own money on tuition, room board, etc, but I definitely know how much my parents are spending, the sacrifices they're making, and work hard. I had a 3.9 last semester, and while this semester won't be quite as high, it will still be honors. My current roommate is having litterally everything (even books) paid for by her parents, and she has a 4.0 and is flipping out that she may get an A- this semester. One of my roommates from last semester has thousands in loans, and is counting on the nurse reinvestment act to pay them back. Yet she's drunk every night of the week, and barely maintained the gpa last semester to stay in the nursing program. We all know she won't last much longer and then will have to pay those mega loans back (12k at least) flipping burgers. Another roommate was similar. So yes, for some people having to pay for school themseleves makes them more aware, but for some, it just doesn't matter