protego shield charm

[stlcole]

No: HPFGUIDX 70226

--- In HPforGrownups at yahoogroups.com, "ktgiii" <kathryn-jones at a...> 
wrote:
> Hello all.  After almost two years, I'm finally de-lurking.
> 
> Harry uses the protego shield charm against Snape during his 
> occlumency lessons (ch. 24 p.591 U.S.), and then again during the 
> final fight (ch 35 p. 783 U.S.)
> 
> Where and when did he learn this spell?  He uses it well both 
times.  

ME:
He learned in in book 4 during his practices leading up to the third 
triwizard test.