For several months now, leaders in Katy ISD have talked about the possibility of relocating its Two-Way Immersion Model bilingual education program, colloquially known as TWI. The idea has frustrated parents of children in the program and has repeatedly asked the district to expand or simply maintain the offering. Some, however, may be unfamiliar with the program’s scope and history. With the board of trustees prepared to vote Monday, Feb. 26, on whether to phase out the program starting this fall, here is a look at TWI in more detail: *Editor's note: the phrase "or ending" was removed from the first paragraph of this story.