Should follow into enchantment school due to its nature as a spell that modifies someone with magical effects.
Quote from: EnchantmentSpells from the enchantmentspell school (//%22http://nwn.wikia.com/wiki/Spell_school%22) involve gaining control over another creature, or imbuing them with special properties.
"Imbuing them with special properties" isn't really how most NWN Enchantment spells work and isn't how I see the spell school. The spell school in EFU should be understood as being focused on mental based spells (confusing, holding, making them laugh, etc....)