6,5 actually.
I think that...there's not a lot of things to do outside of classes and homework. The University "party scene" feels very small, almost non existent. If they included at least two extra gameplay objects related to leisure/parties (billiard tables for example), and the ability to throw an actual post graduation party in the dorm or house or whatever it would have been better. The small number of new unique social interactions also hurts this pack in my opinion, it feels like we've been stuck with the same social interactions since the BG sometimes.
I also feel like out of the three iterations, this pack is the most unbalanced in terms of gameplay. First, it's too easy to get scholarships. My sim ended up not having to pay for university at all, making the repoman a novelty. As a matter of fact, my sim was given money due to how many scholarships he had....I wish there was a limit of 1 scholarship per semester and you could choose between the ones awarded to you. Secondly, your sim has to spend a ridiculous amount of time in Uni to be able to graduate. Even if you condemn yourself to 4 classes per semester, which all demand your sim to do homework plus either an exam or a presentation or a term paper, you have to stay for three semesters. By the time your sim gets the degree he's an adult who's about to turn into an elder...I had to put the age lifespan into long otherwise my sim would have maybe 1 week of time as an adult. I think this works better when you have a teen about to turn into a YA, who applies early, but still....it is worth it though, as you go straight to level 7 if you graduate with a good grade.
But I do like how in depth they did certain features like bot building although it would have been nice if they gave us the customisation that we had with Plumbots. I think the bicycles are amazing and the organisations are way more in depth than what I thought which is great, albeit the tasks can get a bit repetitive, but that's expected at this point. My sim did not have the time to interact with the secret society doing 4 classes per semester so I'll have to check that out later. I also like how in depth they went with researching and studying in this pack, more than before, which is great. I also appretiate the difficulty of managing classes and studying and keeping my sim's needs on the green whilst being part of an organisation and a school "part-time career". The rewards seem pretty good to me as well, and I love that I can put my sim's graduation picture on the wall along with his diploma.
All in all it's not a bad pack, I'd say it's one of TS4's top 3 packs for me, along with Seasons and Get Famous.