Even though recommendations are usually supposed to come from junior year classes, would it be unheard of to include a recommendation from a teacher I had in middle school? Let me elaborate. He is no ordinary teacher; I would liken a rec from him to one from a scout leader or church member, because it would be based on an ongoing activity and relationship.
I first had this teacher for pre-algebra 7th grade. I was the leader of the first (and very successful) math team at that school (under his coaching) and have continued my participation into high school by helping to expand participation, organizing activities, and mentoring/asst. coaching his current team. Over the course of 5+ years now, we’ve gotten to be really good friends, and on top of all the work we’ve done together I can honestly say he knows more about my character, personality, and general social/family context than any high school teacher.
Would it be inappropriate to include something from him along with my other great (though less informative) high-school teacher recs?