Our district:

Regular (about 50% of the kids in my DD's school)

6th- 6th grade Math
7th- 7th grade Math
8th- 8th grade Math

6th to 8th grade common core curriculum is basically pre-Algebra/ pre-Geometry.

Accelerated (about 35% of kids)

6th - late 6th and 7th grade
7th - 8th grade Math
8th - Algebra I

TAG (about 15%)

6th - late 7th and 8th grade
7th - Algebra I
8th - Geometry

But a few kids in 6th are doing Algebra I after taking 7th grade , 8th grade and Algebra readiness exam require by the district. MS is easier for acceleration because you can mix and match.

They will be bused to HS for Algebra II when they get to 8th grade. Historically, there are a few MS kids going to HS for classes every year and nothing really new. That's the whole reason we chose that school to begin with. Hopefully, it will stay that way.