Wow... I was surprised to see a second season of a Harem comedy actually outdo the first for me. The second season contains alot of fan service (I thought that was why people watched these kind of series anyway?), but the storyline actually put on some big boy pants and stepped outside of the episodic way of life it had been living. (If only a little ;])
Story: 7 out of 10
In my review of the first Rosario to Vampire season, I actually gave the plotline a 4 (the lowest of all categories). The reason I did so was because there was no actual "plotline" and moreso just an episodic collection of character introductions and almost kisses. The second season - at least to me - cleared this up quite nicely.
Although they still have TONS of episodic storylining (What the hell was up with that one episode with the 20 or so mini-arcs for the characters? How dumb), RtVCAPU2 actually filtered out into a solid linear storyline the last few episodes. Even if it was predictable and cliche, it at least showed that it could bite when necessary. The only thing that irritated me is that Aono still has not kissed one of them. He's looking less stoic, and more sexually confused every episode :[
Animation: 8 out of 10
I personally feel as if the second season really stepped up its game in the animation field. Not only did they come otu with a pretty awesome opening song and video, they did much less "budget shots" and worked on their action scenes nicely. A scene I personally remember is (SPOILER) when the human world is watching the sky break.
Sound: 6 out of 10
Sound was a poor field in both series, mostly in part due to the lack of music in the majority of the series. The saving grace for season 2 though, was the shift in both opening and ending song. Voice acting was still done well, with my personal favorites still being Kurumu’s "Yahoohoo" or Moka's "Capu-chuuuu".
Characters: 7 out of 10
Smart, intelligent characters that grow throughout the series was NOT something you could fin in the first season. Every female lead was completely stuck with a stereotypical single-mildest, and never grew as characters. This was changed in the second season.
In the second season, every character has an arc that lets you sympathize, and (pardon the lciche) fall in love with them. During the final episode, Kurumu and Aono have a conversation, and you get to see Kurumu cry, and it just absolutely breaks your heart, and you can't hlep but root for her (that is until the next female shares her sob-story of course :p)
Overall: 7 out of 10
Overall, Rosario to Vampire is still not an impressive series, and if you are as against Studio Gonzo (as most people are), you probably will not enjoy it. However, if this light-hearted Harem comedy is your flavor, I do highly recommend the second season. It is a definite upgrade to the first.