Do you think that every lesson in school is important? In our country it is obligatory school for 9 years, then a students can choose between vocational school ( get a profession) or 3 more years in school. Observing what children learn during first years, I have doubts that 12 years in school are really that necessary. When I was at school, in first grade we were learning letters, numbers and how to write - basics. Now, children that go to first grade must already know how to read, write, substract and add to 20. They end first grade knowing multiplication table. I think school is running forward with todays teaching. Add that not every lesson is so necessary. I totally dont use knowledge in music, drawing, chemistry I have learned. For example I have been learning chemistry for 6 years at school, but despite H20, NaCl, H2SO4 and CO2 dont remember anything, and I doubt that I would use anything that I could have learned.