Ideas on where I am for research project

Focus question: Teacher bias on special needs children and or children in general in the classroom

Question: How do teacher bias effect the students? In what aspects?

*Haven't found any articles pertaining to this to see who studied this

I'm going to do more research to see if I can narrow this topic down more and or if this will be useful information to do a project on. If not, I'm going to have to rethink a new topic.