Some people skip grades and others are held back, and birthdays throw off ages, but that's a general range. Private schools often span multiple education groupings, but public schools are generally broken down into elementary, junior high, and high schools. -- Martin Alan Pedersen
Interesting post. I started robocoding at age 14, which was 9th grade for me. Now I'm in college! Ah, how the time flies. Also, junior high, or middle school, sometimes goes from grades 6-8. And some people consider kindergarten (with a t, not a d :-P) optional. -- Alcatraz
FWIW, "Middle School" was grades 5-8 in the district where I graduated High School, although I think it's 6-8 at most other local districts. -- Voidious