Class is back in session one last time.

In anticipation of the sixth and final season premiere of “Glee,” Fox released the first official cast photos, and Variety has assembled a gallery of the McKinley kids from the very start.

Rachel (Lea Michele), Sue (Jane Lynch), Mr. Schue (Matthew Morrison), Kurt (Chris Colfer), Blaine (Darren Criss), Mercedes (Amber Riley), Sam (Chord Overstreet), Artie (Kevin McHale), Coach Beiste (Dot-Marie Jones), Tina (Jenna Uskowitz), Santana (Naya Rivera), Brittany (Heather Morris) and Puck (Mark Salling) are all featured in the shots.

Missing are Quinn Fabray (Dianna Agron) and Dave Karofsky (Max Adler), but they’ll both be back for the final season. On-set photos revealed the Cheerios reunited, with Agron wearing an “alum” uniform. As for Adler, he’s confirmed to return for at least four episodes, and expected to be in a love triangle with Kurt and Blaine.

However, two couples are confirmed to marry in the last episodes, reported TVLine. Rivera broke the news that there would be a wedding, back in November.

“Glee” returns to Fox on Friday nights with a special two-hour premiere event on Jan. 9 and a two-hour finale event on Mar. 20.