In both instances the kidnappers were caught and the money returned. My son is interested in studying in Costa Rica during summer vacation. I am particularly interested in teaching in a private elementary school. Yes, there are opportunities for teaching here. Tourists are not allowed to work in any field.
Residents are if their status includes it.
Work permits or special residencies are sometimes issued for certain conditions. Those conditions often include help from a prospective employer. Here are a few of the more well-known schools. When contacting them be sure to ask what help they can give you in getting legal. There is a government-run public health system somewhat like socialized medicine.