ITA with this, and I have lived that way most of my life. I am no longer the child with no voice cowering in the corner, and I think the only way to handle this is to address it head on... calmly and respectfully.

She's been making faces at me all morning and I've just been ignoring it. I keep looking for a row of lockers and a principal's office!! What's next? A fight in the cafeteria!!! SHEESH!!!!