Are they in the same class? Are they not in the same class
Are't they in the same class? Are they not is wrong
Are they in the same class
This is a question in our first grade exam. What I write is: are't they in the same class? But many people write: they are't in the same class
If it's the negative form of an interrogative sentence, you're right. If it's the negative form of a declarative sentence, the second sentence is right
Class, are, the, they same in
they are in the same class.