I'm actually surprised nobody else has seen this. NP's and PA's are very common in the hospital, both academic and community. I've had mid-level preceptors in rotations ranging from internal medicine to surgery to psychiatry to family medicine. The clerkship director or attending is an MD but the mid-levels are often equivalent to residents in terms of responsibility with their own set of patients. Some of them play the role of hospitalists admitting and rounding on patients (under an attending) while others are relied on for consults (again under an attending).
A huge point that no one (I don't think) has brought up about the NP teaching at the DO clinical comment is that ... that student is attending SOMA, which is a DO school in Arizona that uses a new curriculum called Community Health Clinics. What happens is that in 2nd year, students are shipped to an area and they do the following 3 years all in community clinics. Their 2nd year of pre-clinical, rotations etc. Students know this entering the program, and the school does it this way on purpose ... it is their mission. The student who posted the original comment should have known that this would be their education, and not attended the school if they didn't want this. It would be like a student choosing a school that used PBL then complaining about the lack of lectures.
