But in most school districts now, grade school or elementary school goes up to grade six, which would be about age eleven or twelve for the children.

但现在在大多数学区，小学或小学升至六年级， 这对孩子们来说大约是十一或十二岁。

And K… the letter K hyphen 12, the number, refers to elementary school, junior high, and senior high (or elementary school and high school), all the way up to grade 12.

而K… … 字母K连字符12，数字，指小学、初中、高中（或小学、高中）， 一直到12年级。