Abstract: A door barricade device having a plate secured to an outward opening room door on a room side of the door; the plate having a pair of rails which engage a doorstop device which slides into the rails and abuts the doorframe inside the room, to prevent the door from opening outwardly.

Abstract: A door barricade device having a bar with two structures attached at either end of the bar, which slide under a door and engage the doorframe, to prevent a door from opening into a room, such as a classroom. The bar can be telescoping, having two portions with one slidably received within the other portion, to allow for adjustment to doors of varying widths. The telescoping bar can have a locking device to lock the bar into a predetermined width. The structures attached at either end can be a pair of footers, each with a post attached, with the posts being shaped to conform to the room frame.