First, I'll write down a link from the Ministry of Education's. You'll find the list of Kanji teached at grade 1-6 here.
Second, I actually don't remember which grammar I learned at each grade, but it is said that "Subjective, Verb, (Shugo, Jutsugo)" are taught at grade 4, "Noun, Verb, Adjective, Adverb, etc" at grade 5.
This page shows books which most Japanese students read at the elementary school.
I hope it will help you :)