You are expected to take rigorous classes and to do well in them. A rising gpa is good- better than the same all years. One bad semester can hurt the overall gpa but if it is a blip in the otherwise good record it can be overlooked. Remember- all the extracurriculars done will not make up for lesser grades. I state this for the sake of other HS students reading this thread. For you, the OP, all you can do now is apply and continue to do your best your final year.