I think you've worded Evasion poorly. There is no such thing as being able to dodge Evocation. You dodge spells from the Evocation school. Then again is this ability useless against spells of other schools that fit the parameter? For example if he's ten feet from an Explosive Runes spell or attacked with an Incendiary Cloud can he use Dodge or not?
If it's only applicable to spells from the Evocation school you should state it clearly. If it's applicable to spells from all schools that fit the parameters, then you should state that clearly. As it stands, I can't tell one way or the the other.