San Luis Potosí is a well known city for the most number of universities in Mexico. Instituto Potosino de Investigación Científica y Tecnológica, Universidad Autonoma de San Luis Potosí and El Colegio de San Luis are also world class research institutions that offer Doctoral degrees.

Mexico, officially the United Mexican States, is a federal constitutional republic in North America. Working may require a work visa, which is difficult to get if you want to freelance for a short time. Most of the government-funded universities in major cities (state capital) have short courses on history, gastronomy, and cultural subjects, and most of them are almost free.

Requirements for the PhD program often involve the student having already obtained a Master’s degree. Additionally, a thesis or dissertation primarily consisting of original academic research must be submitted. In some countries, this work may even need to be defended in front of a panel.