For the last four months I've been studying at St. Patricks Secondary School as an international student and I can tell you it's great so far. 

If you want to get better at any language you will do best by speaking with natives. And what better way would be there than also going to school and living there too. 

So if you're still not convinced on doing one, Let me give you a few more reasons for studying abroad.

If you've never been to another country you'll be surprised how interesting another culture can be: food, mannerisms, dialects etc. are always varying even if you just go to another county. Furthermore experiencing that culture will give you a new sight on things. It's a bit like seeing a second opinion on something.

And lastly and most important you will have great memories of the friends you make and the places you visit.