Spanish courses on Margarita Island 
Cela Spanish School offers Spanish language courses on Margarita Island, Venezuela. Courses in small groups, 5 levels, excursions included. Accommodation in host families. Also Spanish courses for special purposes and Spanish teachers.
http://cela-ve.com/

Travel World - Education 
Educational and particularly cultural holidays for students and people in adult education. A wide range of websites are listed with courses for adults and children including survival training and adventure courses. There is also a wide choice of options for students taking a gap year.
http://travel.world.co.uk/educate.htm

Educational Holidays 
A range of websites offering educational tours and trips for schools, college, and individual students. Most of the tours and visits seem to be for people wanting to holiday in Europe, though there are some agencies offering holidays for students in the USA.
http://www.abta.com/specialisations/educational.html