To work in Mexico you will require a degree in line with your chosen subject obtained in the West (UK, US, Canada or Australia), a teaching qualification, at least 2 years of experience and must be a native speaker of English.
Those with international experience may also have an easier time securing positions and additionally, a CEFL, TEFL, Delta and other qualifications will help to secure a post.
As always, please check our guide on VISA & Work Permit Restrictions.