Ringette problems

Over the last few months ringette has been going well, but recently I've hit a stumbling block.  We've been having a lot of practices lately in preparation for Atlantics next week, and that likely will be fine.  I will have to miss one day of school (Friday), which I don't want to do at all, but it's just one day and I'll manage to get caught up.  What worries me is what else is on the horizon:  Nationals.  I had always wanted to just go to Easterns, seeing as Nationals is kind of above our paygrade and we likely won't have as many close games than if we went to Easterns.  But the older girls decided right out the gate that for whatever reason they wanted to go to Nationals, and so that's the way it was.  I didn't like it then, and it's even worse now:  while for Easterns I'd likely only miss two days of school, for Nationals I will have to miss an entire week.  And not just any week: The week of April 2nd -- exam week.  I can't miss six major IB tests; I just can't.  I would have to do them right when I get back, and it would be impossible to study while I was there:  I'd be sharing a room with three of my teammates as we are forced to do to increase 'team bonding' and I'll have no time for myself.  Last time I was at a tournament like this I ended up sitting on the top landing of the hotel's back stairwell to read the novel that was assigned for French class.  Trying to study for six big exams is not going to end well.  So what am I going to do?  I don't want to drop provincial ringette entirely; if I tell my coach that I can't go to Nationals he'll blow his top; I can't even take a third option and drop down to the A team that they created to go to Easterns because of some 'roster rule' that states you can only be on one roster per season, even if you leave the other team.  That's a real bummer for me, as all I ever wanted to do was go to Easterns, and if I had known that they were going to make this team later in the season, I would have held out for it in a heartbeat.  I'm caught between a rock and a hard place here, and I have no idea what I'm going to do.