Thankyou for the correction (sigh, I should know by now not to expect slashdot summaries to get such "minor" details correct).
_However_ (now that I've read the article and followup articles including court quotes) that means it would be the principal and the other school officials involved who would be risking destruction and obstruction charges, and the officer still isn't blameless either. I mean, if I'm reading the articles correctly, this appears to be how it went down:
police: "oh hi I've been informed there was a potential felony wiretapping"
school: "I ordered the kid to delete it"
police: "you ordered destruction of evidence of a felony?"
school: "uh... but hey the kid was upsetting us by recording the bullying we were ignoring"
police: "oh that's alright then, I'll charge him with disorderly conduct"
prosecution: "sounds legit"
judge: "sounds legit"
Seriously, again, WTF?
Don't know about Pennsylvania, but in my state the school, police, prosecution and judge would all be guilty of the felony of "attempting to pervert justice".