Recess. The episode where Spinelli doesn't want her parents to go to parents evening because they'll embarrass her, and she lies to everyone to not make them come. Then she hires two people to act as her parents but they leave early. In the end, her parents do come because they found the letter in her clothes, they embarrass her, there's a chat between her & her parents about not worrying because every parent embarrasses their child at some point.
Am I right?
http://www.disboards.com/showthread.php?t=2500482&page=156
I posted the answers to the last three clues on the MM at AK thread about 5 hours ago.