Tweed.

Schoolgirl cool. Pretty fitting for a teacher. My version includes this super cute tweed shift dress with faux leather trimmed pockets and a zippered front. Equal parts comfy and chic. I added a pair of cap toe flats and this roomy backpack (from Target, of course) to stay with my schoolgirl vibe. Easy as 2 + 2 = 4. 

Jumper: Kirna Zabete x Target (old, similar here, here, and here).  Turtleneck: J. Crew.  Flats: Gap (old, similar).  Backpack: Target.  Watch: Michael Kors.