No, its rated TV14
Glee is rated tv-14 for sexual content.
It will probably be rated PG or PG-13
Glee - 2009 A Very Glee Christmas 2-10 is rated/received certificates of: Brazil:Livre (DVD rating)
It is rated PG for thematic elements, brief language, and some sensuality.
Glee - 2009 I Do 4-14 is rated/received certificates of: USA:TV-14
actually TV-14.
Glee - 2009 Theatricality 1-20 is rated/received certificates of: Netherlands:AL
Glee - 2009 Home 1-16 is rated/received certificates of: Australia:PG
Glee - 2009 Dream On 1-19 is rated/received certificates of: Netherlands:AL
Glee - 2009 Preggers 1-4 is rated/received certificates of: Netherlands:AL
Glee - 2009 Showmance 1-2 is rated/received certificates of: Netherlands:AL
Glee - 2009 I Am Unicorn 3-2 is rated/received certificates of: Netherlands:AL