Hi there. Just so you know... In Oman it is not possible for a woman to get a dependent visa for her husband. And with difficulty, she can get one for a child if she is not married. I know it's weird, but it's the way it is. I am currently teaching in Oman. I am aware of this school you mentioned and they seem legit, just not professional. And why on earth would you want to work for 1/3 the salary that foreign teachers are paid? I would like to suggest that you do some more research before you decide to make this change. :) Good luck with your plans.