The most success for teaching comes from a teacher with higher education. By gaining a Masters you can see a huge raise in money for your work. Many schools will actually pay for your Master, once you start teaching in their district. Now I noticed you are from Argentina, and this may mean that the schools may not do the same thing as here in the United States. The best thing to do is to ask your supervisor. Keep in mind, there is not a lot of money in teaching. The reward is the fact that you are shaping the mind of future generations! The nice thing about teaching is that you have the summers off and could possibly get a summer job to make more money.