Re: How to Handle Know It All Student?
Smile and say thanks.
If he corrects you on something that you know is wrong call sensei over and ask him. If the know it all is constantly wrong, doing this will eventually shut him up.
When I am teaching if I see a student doing that to another I usually correct them, and tell them it's not time for them to be teacher yet.
And having good technique usually shuts them up one way or another, the hard way or the soft way...