What exactly will Ivy League schools look at?

I understand that IB is supposed to give us an advantage because it’s the most rigorous academic program for high school students, however what grades do schools look at. Particularly Ivy League Schools? Do they look at our quarter grades, semester grades, end of year grades, predicted grades or what? I’m confused and I would like to know.

They will look at the grades which are posted on your HS transcript be it quarter/semester or final of end of year grades.

@Gumbymom
so basically whatever is on my school transcript is what they assess. So say my high school transcript consists of my year end grades of my junior year that’s what they will look at and they won’t ask for more? (such as quarter grades) Also wouldn’t they ask for predicted grades at the beginning of senior year?

They will ask for a Mid-year report of your grades Senior year after you have applied.