Every resident of Chile has national insurance, as a legal teacher there who has registered for residency, you too will have this coverage.  In most cases, when you arrive and go through the paperwork to legally get a working visa, temporary residency forms and national medical forms will be part of the legalization process. 

BE AWARE: you will not actually have coverage until the end of your first month or later.  We highly advise you go with expat medical insurance.

Insurance here varies from school to school but may be something like this:

• Reembolso 50% remedies con receta medica
• Reembolso 50% consultas medicas y examenes
• Reembolso de gasto do operaciones 50% de lo que no cubre la Isapre
• Deducible mas o menos $10.000-el la primera situación de reembolso
• Prescriptions are available but may not be exactly the same.
• Count on allergies to be affected by smog and dust.