I pay them extra, I put facilities and nice houses near the power plants, I always restrict the number of teaching jobs available -- and STILL they won't stay put. Where do they go? and, more important, Why? ...
You tell us next to nothing but your questions, so the best you can get is questions back at you.
Pay is not the only incentive, especially to stay on the island. What is your pay scale? How does it campare with the Caribbean average? How much do
you consider extra?
Where are your power plants - on the "downwind" corner of the island way away from the rest of the rest of the population? "Facilities" equal the full range of needs recharge service buildings? Marketplace, Clinic, Church, one or more entertainment buildings? Nice houses don't help much unless they decide to be old maids. You "import" them and they arrive single; when they marry, their husband chooses the house - near
his work place.
They - the Engineers - are college educated. "Teaching" jobs are high school educated. They do not rush away from the college job to take a high school job. Why are you worried about teaching jobs?
You have to watch what happens to find out where they go. How many college educated females do you have on the island (list in Almanac)? What is your emigration rate (in Almanac)? You have to watch them whilst reading their thoughts to find out the "why" they are leaving.