Why is Tsukune allowed into the monster school in Rosario+Vampire?


So, Tsukune's father finds a school admission letter someone drops, and gives
it to Tsukune. And then Tsukune goes into a monster school, and the magic to
stop humans doesn't work, and he becomes a normal student. Am I the only one
who finds this weird?

Is there any reason he was allowed in the school? Surely the
teachers/headmaster would realize he is not a monster, and that he is using
someone else's admission letter?




The trick to this is, that noone in the school knows he is human except

> the headmaster, who dropped his letter of admission in the first episode

and maybe the bus driver, who is revealed to be:

> Nurarihyon the supreme commander of all monsters in the last episode of the
> 2nd season manga.

additionaly to the end of Capu 1 (it's their Season)

> he almost dies and Moka Akashiya turns him into a part-vampire to save his
> life

The plot device used for this is, that in School no one is allowed to show
their true form, but have to disguise as humans. This allows him to wander
freely in this school for monsters.

At the same time of the revelation on who the Bus Driver is, the true reason
is also revealed:

> Nurarihyon (aka the Bus Driver, aka the supreme commander of all monsters)
> wants Tsukune to be the next headmaster of the school of monsters.

