I did attend the open house, here are some of my notes:
There were around 50 people, maybe more. They started us out in a tour, which was interesting. Our guide was a 3L and showed us around the law building, the classrooms, and the libraries. There lockers for all students, the library seems small, but goes through the entire building, and the classrooms and discussion rooms seemed new. The guide also knew a lot about the intricacies of the CO-OP program, and showed us the CO-OP room.
There aren't too many large classrooms, besides the one the information session was held in. There was a CO-OP employer, a 2L I believe, and the admissions director and others. The assistant dean spoke about how unique the CO-OP program is, and she proved this when she went around and had us introduce ourselves and tell why we applied to NE. Almost all responded that the CO-OP program gave something other schools didn't. I was also surprised that most of the students had graduated from the top area schools.
Overall, I was impressed with the building, the location, and those who spoke about the school. A couple of things that really stood out was that through the CO-OPs students are able to have 4 chances at a field of law, and I think this is a great way to know what you want to do before you even graduate. Also, they told us about the differences between summer associates and CO-OPs, where associate positions are more about trying to recruit students, whereas the CO-OPs are real work for students.
The open house left a favorable impression on me. NE was my top choice, and still is.