Is “everyone went to the dance, but me” a compound sentence?

"Everyone went to the dance, but me," is not a compound sentence.

Explanation:

A compound sentence is--similarly to the sentence in the question--something a comma is present within. The similarities basically end there. A compound sentence is the joining of two separate thoughts with--in general--the first being a complete sentence with a subject, and the second being an incomplete sentence, but having a different subject.

In the above sentence, the first clause is a complete thought that could be on its own,

but the second sentence is incomplete without the first even with a subject and verb.

That's the best explanation I can give on compound sentences.

In your case with the sentence, "Everyone went to the dance, but me," there may be a subject, verb, and complete sentence in...

but even with, "But me." being incomplete, the fact there is no subject nor verb removes the possibility of it being a compound sentence.

one reason summer auggie is because she is kind, and the whole "boy war" between jack will and julian was probaly thinking her to be on auggies sode and if you read auggie and me,   she was nice to auggie because julian was mean and auggie needed some freinds. hope this