Is this word choice possible?

Question

I know it's possible to say 'we are in the same class together' but is it also possible to say 'we go to the same class together'? I've tried looking on here: https://www.englishforums.com/English/GoInToTheSameClass/bvhvkk/post.htm but the answers were ambiguous and I'm looking for something more subtle.

1. We are in the same class.
2. We go to the same class.

Also, if the later is possible, do we say "go to the same class" or "go in the same class"?

Answer 1

we are in the same class

means you both are in the same "group" or "cohort" of something, it could be:

1) the same academic class, e.g. the Class of 2016
2) the same subject class, e.g. Introductory Chemistry
3) the same social status, e.g. aristocratic class
4) the same passenger class, e.g. First Class

by adding "together", it will tend to bias the meaning towards the first two possibilities.

we are in the same class together

would probably be understood to mean the same subject class, e.g. Astronomy.

We go to the same class.

usually means you both are physically in the same classroom taking the same subject class.

A more usual phrasing to express sharing the same subject class might be

We take the same Physics class.
We have the same Physics class.