[user104658]

In this case it's very relevant because there may be some relevance in it being a Christian school - i.e. a twisted concept of "revenge" on the people this person feels is oppressing them.

Also, as it's a female to male identifying person, it's relevant to know if they were on testosterone, as there is AMPLE evidence showing that HRT utilising high doses of testosterone - especially combined with other HRT meds - increases acts of aggression. It may not be the case at all but it's important to know and understand these things because the claims will always be adamant denial that there are significant and worrying side effects to heavy doses of HRT.