The site says it means (is what Kimura from the class 3 [said]!!)
I feel it's not really correct in this case, but I want to confirm first.
Is it actually something more like ってことは in this case?
Does it translate to something like, So that means kimura from 3rd class is...!! (flat chested or something)
I tried finding info in various j-j dictionaries, but I failed to find any concrete examples of って being used like this.