Ghostquake

Ghostquake also known as Haunted High is a 2012 American madefortelevision horror film produced by Syfy. The film was directed by Jeffrey Lando and written by Paul A. Birkett and Anthony C. Ferrante. The film stars Danny Trejo and MC Gainey. It follows a group of high school students trying to escape the wrath of a few ghastly spirits, following an earthquake at their school, Holloman High School. Mysterious school cleaner Ortiz, who has been protecting the academy in secret, steps forward to help the youths. Ghostquake first aired on Syfy on August 25, 2012.

Meanwhile, Quentin has barely managed to escape. He hurriedly informs seven of his friends about the situation and requests their help. Danforth and his henchwoman use their supernatural powers to tackle their efforts. Ultimately most of them die, except for Quentin and his girlfriend Whitney Lauren Pennington. They free Ortiz from his imprisonment. Just then, Danforth and his assistant arrive. The henchwoman is eliminated with the help of Ortizs sisters spirit but Danforth possesses Quentin after killing Ortiz. Now a ghost, Ortiz engages in a scuffle with Danforth by forcing him out of Quentin. As they fight, Quentin dissolves Danforths ring, which enables him to survive, causing him to disappear into nothingness. Peace is restored and operations at Holloman resume as normal.Danny Trejo signed on as Ortiz, a janitor who is secretly the kickbutt guardian of the school. MC Gainey played the main antagonist of the film, Danforth, a demonic dead headmaster. Charisma Carpenter made a cameo appearance as a school librarian. Jonathan Baron was cast as Danforths grandson and Holloman student Quentin. ........

Source: Wikipedia