I wanted to respond to the OP, or at least to the title
"Life is tough and children need to learn how to deal with it"
I really really hate that sentiment. It's not even so much the "Life is tough" bit because, indeed, life does throw challenges at people and those challenges are sometimes difficult. It's the "Children need to learn" sentiment which has my hackles rising.
Because behind "they have to learn" is an implied "and it's going to hurt them" and somehow the speaker is just RELISHING the fact that they are going to suffer, and that suffering is Good For Them. Whenever I have encountered it, there is an edge to the tone of voice, an entire world view which believes that That Which Does Not Destroy Us Makes Us Stronger, and You Have To Suffer To Be Beautiful. The person saying it subscribes that well known magazine The School of Hard Knocks Weekly.
But I believe that they are wrong. People learn least well through suffering because the brain does not function as well under stress. The things people learn in stressful situations are not necessarily at all what those trying to teach them (parents, teachers, peers, whoever) are trying to teach.
If school is horribly stressful for a child, they'll be better off out of it educationally and socially, long and short term, rather than self-harming or committing suicide or anorexic or waiting to see if the last lot of bruises heals before the next lot arrives or weeping every Sunday night as the new week begins.
We all know that many people had a lovely time at school and their children are having lovely times at school. Splendid. This conversation is not about you.