Plot/Story: 9/10
As for the plot, there really isn't any. Then again, being a CGDCT anime, I never expected too much of a plot anyway. One could even argue the fact we saw their graduation actually happen is more progress than most slice of life shows.
Toward the end, there seemed to be the "dropped" plot point of the club trying to find members after the senior's graduation. I don't think this really affected my enjoyment of show, nor do I believe this really should have been expanded on. Introducing new members last second would seem rushed, especially since we won't see much of them.
Art: 10/10
There isn't much to comment on the animation. It's what you'd expect from Kyoto Animation - smooth, consistent, and cute. What I have noticed, although this might just be me, is that the color palette used in most scenes is rather dark compared to other SoL/moe anime.
Character: 10/10
Each character was fairly believable, and they really worked well together. The relationships formed were also heartwarming to see. To see them separate as the seniors head for college was sad but at the same time compelling, seeing how each character handles the experience.
Overall: 10/10
To reiterate, K-on is a must watch anime for fans of the SoL/CGDCT anime. If I had to complain about one thing, it is how every girl was able to attend the same college. It seemed unrealistic and quite frankly took away some emotional value the ending had. I felt worse for Sawako, Azusa and Ui more than the main four knowing they would continue their friendship in college.
