[@TheUnknowable]
Character Sheet updated to detail each school of magic. He will not be using the (healing) subschool of Conjuration at all. But it is a subschool that exists.

The process of raising dead in Mym can be very different than Adamar's home plane. This is your world, and the machinations of such magic is entirely up to you.

As for telling people about his necromancy, he would be used to such practices being taboo in his home plane. He would not be quick to divulge such secrets to newcomers on Mym.