Schools are one way to implement education. Homeschooled kids outperform government schooled kids for much lower costs.

You can assert the necessity of government education all you want, but it doesn't make it true. Unless you simply mean the daycare function of schools and the facade of learning are needed to maintain society in its currently degraded form, because then I'd agree with you.

Schools make the education happen. 
You can rag on public education all you want, but it is needed in our society. 
Yes, it might be becoming bloated, and may need to be trimmed, but it is still needed. 

Satosora

If only kids were actually learning those things, beyond what they would learn on their own.

Education is great. School sucks.

Undisciplined

Many students are deficient in math and reading based on their test scores


Bell_curve

econ

Punishment is a Public Good

Im not sure. 
Basic life skills like math and science are somewhat important. 
Even english. 