Kasha,
From what I’ve read (supposedly quoting statements from parents whos kids were excluded) was that they were willing to do everything the stricter school wanted, and the school didn’t want them.
Truth be told, Israeli Charedi is a foriegn concept to me. I know its vastly different than American Charedi and American Charedim are often not accepted by the Israeli Charedi communities. So maybe this is just Israeli culture.
I don’t assume any media outlet is unbiased.