Dude, this is only gr. 11 so it doesn't matter. Plus, how is getting an A- considered bad these days? Sure, it's not going to get you into a top math program at Waterloo or anything, but you still have a bunch of other options with those types of grades. You can redeem yourself in gr. 12, but even if you don't, it's not the end of the world. You can go to a second-rate school and still make a respectable living, you do realize that, right?