Telepresence Teacher with On-Site Intern.  Hire the teacher from the mainland, qualify, return to the mainland, where they are, and stay. A State telecommuter worker. The on-site intern/aid will be a local that wants to stay local.  The Telepresence Robots are not that expensive anymore. The bandwidth is there for streaming 2-way video and audio, even some tactile. It would also allow the school children to see how practical robotics and science is used. There are a few telecommuter robotics companies, so there are operational systems. There are also remote whiteboards. It makes the job a lot easier for the teacher while still being able to get the interaction with the students.  https://www.doublerobotics.com/