Do colleges look at specific A grades?

Do the top colleges (Ivy League, etc.) care whether you got an A-, A or A+ in your classes? I know that in more rigorous classes it is okay to get slightly lower grades but I still have been getting more A-s so far this year than I would have liked. I also am hoping to go into engineering, and have gotten a couple A-s in science so far. Will engineering colleges rather have someone who got an A or an A+ than an A-? Also, some high schools make it so that in an unweighted GPA A-s are worth 3.7 out of 4. In my high school, they are still worth 4.0, so will colleges calculate what I would have gotten with this other system? Which system is more popular? (Sorry this is so long).

I think top colleges assume all students they are considering have As. After that they are moving to all of an applicants other qualities. As far as the minuses and plusses…I don’t think it matters because we all know the curriculum and teacher has a lot to do with grades anyway.

Our guidance counselor said, that the very tippy top schools do make a distinction between an A and an A-.

An A+ and an A are equivalent, as many HS’s do not have A+'s. Highly selective colleges will differentiate between an A and an A-.

Thanks that helps a lot.