High School GPA

I read the wiki, but I’m still unclear on what counts as a “garbage” high school GPA. Would a 3.8 be considered weak?

At my school, a 4.0 corresponds to an A+, and a 3.8 is an A. I ended up with two Bs in high school, one in junior year and one in senior year.

I’m currently at the University of Michigan and planning to apply as a sophomore transfer to Ivies