Junior year

<p>I know most ivy schools focus on junior year grades when looking at grades and most of my junior year marks are high 80s to high 90s ( im a canadian ib student). However i did extremely poorly in grade 11 HL chrm (C+) . Ive been working extremly hard on grade 12 chem and now have a 90+ in that class. Will my junior yr mark still significantly decrease my chances of getting into Dartmouth?</p>