By Gregg WendorfAdvance News JournalHidalgo County has more than its fair share of school-related sex scandals. Some were even caught on video. But compared to a Missouri middle school principal who showed up in the national news lately, ours might be considered tame in comparison.When I first think of the local sex scandals The Advance News Journal has covered over the years, more than a few pop up. Probably the one I remember most is the local principal who was having an affair with one of his subordinates before things really got out of hand.Rather than book a local motel ...