relatively simple if schools have the guts to do it...
school assembly - we need to bring some clarity to certain things, some girls may feel that they are a bit more like boys / some boys feel that they are a bit more like girls, and that is great, you can be any shape of girl / boy you wish... however, underlying everything you are born with a biological sex as a girl or boy and that can't change. Whatever anyone tells you, a boy can never physically become a girl or vice versa. The government has recently confirmed this and the law, and a part of that is that in schools we must call you by the pronouns which are linked to how you are born - boy or girl. You might not like this, you might feel it is wrong, and every class will have a session with your teacher to discuss this - however, it is the rules of the country and it is based on biology which can't be changed, so it is now the school rule and from today it is what we will be doing.
This doesn't change how you might feel, and there will be boys who prefer to do things that society say are only done by girls, and girls who want to do things that society says are done by boys - that is okay, it is silly to think that only boys can play rugby / climb trees / play football - just look at how well the women's football team did recently. Equally society says that doing crafts, or knitting, etc. is a girly thing - what nonsense, it can be done by anyone.
So, we are going to remember that biology (whether you are a boy or girl) is something that is fixed and built in by how you are made, when the sperm meets the egg, you become a boy or a girl... but what kind of boy or girl you wish to be - that is up to you to be the best you can be in the shape you enjoy the most...
etc.
yes, there will be fallout and all sorts of uproar - but it is necessary to have some solid black and white return to normality and then deal with issues under the correct umbrellas of mental health etc.
we have to split biological sex and 'how you feel' the two should never be conflated, and the how you feel can be seen historically to vary - men in high heels - normal in regency society - pink the boys colour until the 1920s etc. society norms change - but biology never does.