Great idea Clancyn.  Just thinking the same thing.  The school system is a good place to start.  
Even contracting his tutoring/ interpreter services to governments on short contracts or for specific files is a start.
He can operate as a small business Tutor/ Interpretor at anytime.   His sponsors should provide help in researching this.   Being hired by a schoolboard would be better than having a small business but both are interesting ideas.