"And you're okay with your kids growing up with an alcoholic?" Errrrr - expat if she was okay about it, why would she be posting here? Have you noticed how many MOTHERS have posted on the alcohol abuse thread? Why not ask their partners, children or other significant people in their lives if they are okay about being brought up by someone who has issues surrounding alcohol?
Do you think that all the children of all the women who have posted on the thread who have had issues surrounding alcohol should have their children taken into care?
Why stop there? Why not remove all children from parents who have any kind of personality disorder, any kind of addiction, any kind of defect, in fact any parent who is not 100% perfect?
Yes - the drink driving thing is extremely worrying, which is presumably why the school have mentioned it in the hope that the OP will do something about it - ie make alternative arrangements for her children getting to school.
The OP is now trying to do something about it WHICH IS WHY SHE POSTED ON HERE?
Even if the OP booted him out of the house right now, you know what, he is still the father of her children and, in fact, his children may well love him and he them.
Addiction is an ILLNESS and is also a symptom of underlying issues.
OP, hope you are okay. It's bad enough having to cope with all that stuff without having complete strangers make nasty slurs on your predicament.
Not everyone makes 100% perfect life choices you know, expat. Sometimes bad things happen to people and sometimes people change.
If only we could all be married to paragons of virtue like you, the world would no doubt be a wonderful place, although most people's children would be "in care".