Hey there! I am not too sure but your question may get a better answer in the LPN or Patient Care Technician forum! Good luck! I know I want to be a PCT a few hours a week after my first semester is done.
Depends on the facility, but often it is for nursing students working towards their RN. Especially in facilities that only hire RN's. Part of the issue is that some of the skills and theory taught/used are skills that are more on the RN scope of practice level than LPN scope of practice.
If the job description says "professional nursing student", it is restricted to students in an RN program as opposed to "practical nursing students".