need help! scared of 10 year ban and what to do

I am currently 17 years old and have lived in the us since i was 6 years old. my parents overstayed their visa and have lived here in the states ever since. i am currently attending my final year of high school here, and am hoping to go back to canada on my 18th birthday in order to not get a 10 year ban. only problem is my birthday is in april, while my school year ends in june.i hope to leave for at least a week during my spring break to canada, then come back into the US to finish high school. after graduation my family will pay for a 1 month trip to europe with a few of my american friends (this will be in the summer). i will be departing from dc and then returning to dc after my trip. after i return, i hope to stay for a month before leaving to canada for college and to continue on with my life. all of my family members besides my parents are american citizens. i am currently renewing my passport in the US since my old canadian passport expired in 2005. will i have any trouble entering canada in april? what about when i try to come back after a week to finish school? and after my europe trip? if any one knows any info, please help. i am very nervous, but hopefully everything will turn out okay since i dont plan to continue living in the US after my graduation.