I think a lot of things are to blame. I'm a new nurse but I think when you look at society as a whole, they've become more relaxed. I'm 34 and I hate what cellphones have done. I hate that you go to a wedding and people show up wearing jeans with holes and a sloppy tshirt. I wear jeans (sometimes with holes) and tshirts. I do have an iphone and check facebook from it. But I was raised that there's a time and place for everything. At work, my hair is pulled back neatly and my phone is put away in my purse with the ringer on silent. My scrubs are clean and not wrinkled.
In school, it was hit or miss with clinical instructors. My first clinical instructor never set clear expectations about paperwork with us. SHe would swing back and forth on various issues. To be honest, none of us had a clue where we stood or if we were even screwing up. Learning is a process. Yes, in that first semester you're not going to be great, but it's also the responsibility of the instructors to help you build on what you know. Actually grade my paperwork and help me expand, don't do the work for me, but be a little more specific on why you gave me the grade you did. Another one of mine always wore this sweatsuit type outfits and looked like she had just rolled out of bed.
I have also been on units where students weren't welcomed. Sometimes it was a whole unit; other times it was a specific nurse or two. Some units were helpful in telling us which computers were going to be open for us to use.
If my school asked me today what they could do to make the program better, I would tell them that one of the first things they need to teach is communicating with doctors and other nurses- not just the general communications/speech class they make everyone take. And I would like to see more opportunities for students to shadow a nurse before going to clinicals so that they can observe how a typical work day goes, how the nurse speaks to others, etc. Oh, and screen their adjunct instructors a little better.