That's not a question. Plus it would not make sense to ask for a shortage of teachers. It's possible that you want to apply for a job as a teacher. But who knows? It's just a guess.
:-?
As Tarheel explained, your sentence doesn't make sense. The last part is incomprehensible. Please explain it in a different way. Also, remember that we do not write letters or applications for people. You have to write the application yourself; then you can post it here and we will look at it and try to help you.