Well reading and writing counts, so yes....I learned that at school.
While I despise math, I do know it, and can perform everyday tasks with it. Looking back I did find that we were taught things in school that while being told were 'useful' and 'needed to know if we wanted to succeed in life,' some of it certainly has been useless afterwards.
It really depends on where you go in life after you're finished school. The only person I know who uses ANY math that is close to a grade 11 level is my friend who is an electrician. Everyone else I went to school with functions with simple math. But while I was going to school, we were told math 11 was an extremely important class if we wanted to make it anywhere. I have not used a single formula from math 11 since graduating. No one I know has, and the only jobs I know that require that math are specialized jobs.
The only class I found that is extremely important in functioning outside of school is English, plain and simple. Being able to read and write is invaluable.
You won't remember everything you're taught in school. You're not supposed to. Everything they teach is simply supposed to be groundwork so that you have some background information once leaving school.
In social studies we learned about mesopotamia and the babylonians and stuff. Does this really help me? No....but it gives me an idea on what came before me.
In all honesty, going through school is simply going through the motions. You're not supposed to remember every single thing you're taught, but it just lays groundwork. They pump you through school teaching everyone the same standard of education, and what they deem to be necessary. Some of it you need, some of it you don't, but it creates a decent enough framework to hopefully let kids succeed outside of school.