Sparkysbird, I always enjoy having student on my floor, I tell them that if they want to have some "hands on" to be sure and be available when I am looking for them. There are some students that will hide out in the break room and never actually want to do or witness anything. I have arranged for some of "my" students to witness central line placement, (with Dr and patient permission), if they need to be checked off on a skill that I can have them call their instructor, then I allow that. For me, it all depends on the student. I am usually assigned 1-2 students, and I encourage them to ask questions and to follow me to see what else needs to be done.
I hope that your clinical experiences improve, keep trying. I have some nurses on my floor that doesn't like the students, but, for the most part, I and most of the other nurses enjoy them.