Post graduate studies

If there is anything i have been interested in since I was a child is art, specifically the drawing to pencil carbon  or graphite pencil. Drawing with this technique is really relaxing and the result is beautiful.
 During this time (since that I came in to university) I didn´t do much of this because my free time It´s not much, also I haven´t had much motivation or desire to do so. However, I don´t want to forget this hobby and I would like to take a course in the future focusing only on that. In fact, when I was in school I considered study art in the university, but this covers many other topics that don´t interest me as much, such as the painting or the utilization of other techniques; so I decide for architecture thinking that I could dedicate myself to charcoal drawing and study at the same time. Sadly, this has not happened.
My future plans include move on to other country (for the moment), so I would like to study something relationated with the drawing there after my graduation of my current career. 
I mentioned before that I don´t have much free time now to dedicate for this, this means that I would like to dedicate much time, so a part-time course sounds good. Maybe study in a studio or other, but presencially.