Grammar.
I suppose people uninterested in knowing how things work, whether they be numbers or languages or the physical sciences should be excused from school sometime after mastering their ABCs.
SD
What I find interesting on this thread, those interested in math, are interested in other subjects. Those trashing math seem to not want knowledge. Math is the universal language. Most everything can be defined using some type of math.
I said grammer class, not spellun.