The European Association of Cochlear Implant Users has developed some great resources for teachers of deaf or hard of hearing students.
There are 7 different brochures:
1- Being parent to a child with hearing impairment – How to start elementary school
2- Teacher of a child with a hearing impairment
3- Teaching assistant for a child with A hearing impairment
4- Foreign language teacher of a child with hearing impairment
5- Coach or PE Teacher of a child with a hearing impairment
6- A leisure educator of a child with hearing impairment
7- After-school teacher for a child with hearing impairment
Check them out here.