Mr. Preston

Mr. Preston (Full Name: John Luke Preston) is a supporting character in Gets Grounded. He is Barney's current teacher, as well as a staff member of Plotagon School. He is known for getting mad at Barney, and the other troublemakers' shenanigans, and sending them to the principal's office.

Appearances

 * S1E45: Barney Copies Off Of Caillou's Test
 * S1E46: Barney Installs A Virus On The School Computer
 * S1E50: Barney Dresses Up As His Teacher
 * S1E54: Barney Cheats Off Caillou's Test
 * S2E2: Barney Gets A Job At In-N-Out Burger
 * S2E8: Barney Pulls Down His Teacher's Pants
 * S2E9: Barney Posts An Inappopriate Picture Of His Teacher On Instagram
 * S2E13: Barney Excludes Caillou From A School Project
 * S2E23: Bob The Builder, Little Bill, Dr. Wily, Classic Caillou, Peppa, and Dora Swear In Class
 * S2E29: Jeffy Kills The Gym Teacher
 * S2E31: Barney Gets A Job At Burger King
 * S2E37: Mojo Jojo Steals Blossom's Lunch
 * S2E40: Caillou Pulls Down The Fire Alarm
 * S2E47: Jamie Tries To Cheat Off Carrie's Test
 * S2E50: Barney Disrespects BJ At School
 * S2E61: Pingu Misbehaves On A Field Trip
 * S2E62: Plankton Gives His Teacher A Barney Error
 * S2E71: Rachael Copies Off Penny
 * S2E79: Barney Misbehaves On The Last Day Of School
 * S3E1: Plankton Misbehaves In Summer School
 * S3E6: Barney Roasts & Debates BJ
 * S3E10: Bunnytown Gets An F On His Test
 * S3E27: Bob The Builder Kicks His Teacher In The Torso
 * S3E42: Little Bill Gets His Teacher Fired
 * S3E48: Barney Misbehaves On The First Day Of School
 * S4E17: Rob Fakes Sick
 * S4E18: Barney's Christmas Adventure
 * S4E29: Sid The Science Kid Slaps His Teacher
 * WILL WRITE THE REST SOON!

TRIVIA

 * His full name is John Luke Preston
 * Both Mr. Preston and Mr. Mason's first names are John. They have also both been Barney's teacher before.
 * His wife, Suzy Nelson, is 14 years older than he is.
 * He ressembles Mr. Mason, Barney's old teacher.