This is kinda late, but from what i see. All mana development school is female only. But we have seen many strong male fighter, including Angel family head (that i presume also a strong fighter). So, where did they got their education from?
@gaigous
In other hands, I honestly feel all other girls are too cliche compared to the shounen-ish Melida. Meddling class rep, princess like demure girl, a clutz, stalker, and cool beauty that's so common in school harem /battle or even slice of life yuri manga.