Storyline: 4/5
CUTE,CUTE, and did I mention CUTE?
If you are ok with that, then you can overlook the story faults an just enjoy the absolute cuteness displayed here.
This show involves a guy (Tsuchida) who has just become a kindergarten teacher. On his first day, one of his students (Anzu) thinks that he is hitting on her because he calls her "little miss". She tries to win him over (despite being 5) while he (Tsuchida) tries to win over one of the other female teachers (Yamamoto). The story is basically a way to deliver so much cute to you without actually needing to get serious.
** Spoiler Alert!!! click to hide or show**
The main thing that you think will be resolved (Tsuchida's love for Yamamoto) never does.
Music: 5/5
One opening (It's awesome) and one ending for EACH episode (All of them good, some of them better than others). The opening and ending music is great, and the background music is pretty much instrumental versions of the endings (as far as I can tell). The music has no real problems (some people may find a couple songs a little grating with the kid's voice actors singing them all *in character*, but when it's background music it omits the lyrics).
Characters: 5/5
Even though this show focuses on 5 year olds it still manages to give them great characters (even though most of them end up having some VERY mature traits). Anzu and her mom are mostly the same character (romantic and eccentric), but Anzu is a younger and more innocent version of her mom. Tsuchida is a gamer without any real goals in life (the manga says his life goal is to make a game in RPG maker) but he still manages to be somewhat interesting. Hiiragi is, as Tsuchida says "a walking encyclopedia". She knows things most adults probably don't know. There are many other characters that may be somewhat shallow (in the first 3 seconds you see Tsuchida's sister you already know shes a Tsundere).
Animation: 5/5
Not much to say here. No problems with it.
Overall: 5/5
Don't watch it looking for an intricate story, because the story only does what it needs to do: give reasons for crazy things to happen (usually cute and funny). If you are came to the reviews, you are probably already thinking of watching it, so in that case, sure watch it. If you feel like you need a super-dose of cute, this is it.