The agency responsible for teacher certification shall develop certification endorsement requirements for teachers of deaf and hard of hearing students. The endorsement shall be focused on the specific skills and knowledge necessary to serve the education and communication needs of deaf and hard of hearing students. In establishing rules for the endorsement of teachers who will be working almost exclusively with students who are deaf or hard of hearing, the agency shall consider applicants to have met state endorsement requirements if they possess a baccalaureate or master's degree in deaf education from a teacher training program approved by the council on education of the deaf.