phrases, sayings, idioms and expressions at

The Phrase Finder
Phrases, Sayings and Idioms Home > Discussion Forum
A Phrase A Week - Facebook Group & Follow aphraseaweek on Twitter

Talking out of school

Posted by Barry Wright on August 29, 2004

I'd love to know the origin of "talking out of school"... I believed
it meant telling tales, snitching, or ratting out someone. Others tell me that it now means " speaking outside one's competence"?

True? False? What does anyone think?