The Mexican schools require volunteers three times each year; however you can stay with Make a Difference Abroad for as many semesters as you want, because the program is open year-round too.

Fall semester
Groups depart early to mid-August and return late-December (before Christmas)

Spring semester
Groups depart early- to mid-January and return the last week of April.
Groups depart late-January/mid-February and return the third week of June

Summer semester
Groups depart late-April/early-May and return the second week of August.