@perennialloner,
perennialloner wrote:
1. The students are equally bright and their thoughts are equally valued.
2. The students are equally bright and their thoughts, equally valued.
3. The students are equally bright and their thoughts (are) equally valued.
Are these all acceptable?
I am the farthest thing from an accomplished grammarian, but if you ask me, yes, they all seem acceptable. That said, #2 strikes me as an unusual construction which would not commonly be used. I think it gets the point across effectively, but it may not be grammatically correct.