avclub-4a9f435d95e5ae7264756c0c0e811a2e--disqus
capsulekei
avclub-4a9f435d95e5ae7264756c0c0e811a2e--disqus

What the heck are you talking about?  High school ends at age 17-18 in the US (not earlier) and has for a long time.  Starting college (or University, we use the terms pretty interchangeably colloquially) is pretty standard at age 18.