User blog comment:Darkcloud1111/Good Idea, Bad Idea~Field Trip/@comment-24994749-20140930044517/@comment-3146930-20141001215043

Even if that is what they said in the interview, it fails to come across well in the show, if at all. Jaune almost lets slip that he knows Blake is a Faunus as an example of things Weiss has trusted him with, but Pyrrha shuts him up very quickly and diverts his sentence. Blake then gives Weiss an annoyed look before leaving. That means that either Blake was planning on telling them, but Weiss already told them before Blake had the chance or Blake was planning on keeping it a secret from them for the time being. In each case, the only reason Blake would be mad at Weiss would be because Weiss told them something she wasn't supposed to.