Why would % of kids whose first language isn't English matter? In the west it's pretty common so I'm curious.
This confused (and upset) me actually - the reason this was of a concern to the friend (or I believe, her husband and parents in law) was the belief that there is a high percentage of refugees (she said 40% - I looked up the myschools website, and it lists 29%) with little to no english skills, and therefore the other students get a much lower percentage of the teachers' attention. I have no idea whether that's accurate, and I would imagine there would be a wealth of benefit to be received on both sides of that coin, but that was one of the major factors in that friend not sending her kids to that local school. The school apparently was advertising for a principal who speaks the relevant language, which infuriated her husband, but frankly I thought that was a very sensible idea, to ensure that the parents could communicate with the principal.

Not saying I condone or share that perspective - simply that it is one for some.