I have decided I want to go to Sweden for my senior year.
Been there, done that - although it was in college and not in high school. Excellent idea!
Exchange students typically have 3 to 4 years of foreign language experience before studying abroad.
Nonsense! Whether or not you need prior knowledge of the language depends on the program you're going with. When I was in high school, I spent a semester in France - and wouldn't have survived if I didn't already speak French. I was just dumped with a family and left to fend for myself. EVERYTHING was in French!
But when I went to Sweden, the program I went with assumed that the students would have no prior knowledge of the language. We were provided some language materials ahead of time, but we were also placed in an intensive language program our first three weeks in Sweden. We didn't go to where we'd be living for the year until that program was complete. It wasn't enough to be fluent, but it gave us some basics . . .
If you want to go to Sweden (or Denmark, Norway or Finland), this is who you should contact:
Scandinavian Seminar. I'm not familar with their high school program, but if it's even half as good as their college program, it will be
excellent! And no worries about who you're dealing with - they've been around for decades!
I'm actually planning a trip now to go back and visit the school where I lived for that year. The teacher was my "guidance counselor" for the year is now (decades later) the school director - and I can't wait to see him again!
I'm a bit curious that you would go your senior year, rather than your junior year. I'd think that would conflict with college interviews and things like that - but it sounds like you have a plan.
If you have any questions, I'd be happy to help in any way I can - just let me know.
Oh, and by the way, about that rumor that all Scandinavians speak English - think again! Yes, it's probably true for the younger generations - but is certainly not true of the older folks! Ahhh, the stories I could tell you . . . . !