for mine, I have been the one fighting!!!!
and again with DS2, I am the one raising concerns.
with DD2, I fought with her first school from yr3, altho TBH I knew there were issues from yr1, and all her teachers could say was "oh, you need to get into the world of DD2"......as if she didn;t even have to TRY to get into our world, even tho our world is the one she needed to enter to be able to read etc...... I pulled her out of that school at the beginning of yr5, as they still had that opinion about her, obviously not helpful!!!! she was finally DX last september as she entered secondary school, and her reading and sequencing ages, along with other tests they did, put her at being 5;9yrs reading age!! Just showed how badly behind she was, and how badly her first school had let her down.
with DS1, he is 7yrs and in yr3, and they have finally agreed with me that he does have obvious dyslexic tendencies, but only since DD2 was officially DX'd, as befoer then they fobbed me off. was only because I was proven right really with DD2 that they feel I am able to have some opinion.
and this is the same regarding DS2 I think......they are only listening to be because of DD2, altho they have flagged that he may have other issue's too.
I guess they must have some age to start worrying at tho, as there are many kiddies out there who DO take time to 'click' into learning.