I've been trying to figure out what specific meaning elementary could have and I'm just not sure. Could it be "elementary" in the U.S. education sense of kindergarden (or pre-k) through 4th, 5th, or 6th grade (or perhaps 7th or 8th or 9th grade)? What about elementary as in "Elementary, my dear Watson"?
Beyond that, does it have any meaning when used on its own? What should I expect to see in a question that is tagged only elementary?