Badass Teacher/Playing With

Basic Trope: This teacher is a Hidden Badass and is quick to show that side if you mess with their students.
 * Straight: Anna, a school teacher, comes to the rescue after seeing a student being attacked by a local thug.
 * Exaggerated: Anna comes to the rescue of the entire school after seeing an arson attack.
 * Anna saves every student and school staff members from a series of attacks, all by herself.
 * Downplayed: Anna confronts the thug, and she gives him "The Reason You Suck" Speech without having to get into a fight.
 * Justified: Anna was once a member of the military, and she hasn’t forgotten about her training.
 * In order to make sure her students, Anna had to be tough.
 * Anna is trained in mixed-martial arts, and the thug didn’t know what he was dealing with.
 * Inverted: Anna’s a coward.
 * Subverted: Just as Anna is confronted, she backs off…
 * Double Subverted: Anna goes for a sneak attack after it was reveal that her backing off was a trap.
 * Parodied: ???
 * Zig Zagged: ???
 * Averted: Anna is a regular teacher who doesn’t get involve in fights, unless she's forced to protect her students.
 * Enforced: Anna is a teacher and must hide her fighting background, but it doesn’t mean she’s a coward.
 * Lampshaded: ???
 * Invoked: ???
 * Exploited: ???
 * Defied: ???
 * Discussed: ???
 * Conversed: ???