English proficiency among the Colombian population is not very common yet, such as having contact with non-Spanish speaking persons. This is the reason why Colombian schools are highly interested in bringing intercultural experience into their classroom and improve the quality of English teaching.
The institutions are mainly public schools (colegios) defrayed by the state or religious institutions. However, there are existing other educational institutions, too. In the project you would never be alone with your tasks, but under continuos supervision.
You will work as a teaching assistant supporting the staff. Depending on the project placement and your language skills, you will participate as well in German and/or French classes and additionally organise conversation clubs.
In some schools, you will/can work in further areas, too, such as for example PE, arts, preparing an English singing festival, developing workshops and web pages related to cultural activities. This depends, however on the institution and on you.