1. (Building) Also called: doorsill a sill, esp one made of stone or hardwood, placed at a doorway. 2. any doorway or entrance. 3. the starting point of an experience, event, or venture: on the threshold of manhood.
Definition of Reading Intervention. Reading intervention is a program, supplementary to an existing literacy curriculum, that is provided to students for the primary purpose of increasing reading levels. Such programs can be administered both in and out of the traditional classroom environment.
Therefore, there is a serious need for a reading intervention program rather than a remedial reading program to help below-level readers in grades three and above bring their reading up to level. The chart below summarizes the differences between intervention and remedial programs.