Instructional Design is the practice of arranging meia (communication technology) and content to help learners and teachers transfer knowledge most effectively. The process consists broadly of determining the current state of learner understanding, defining the end goal of instruction, and creating some media-based "intervention" to assist in the transition. Ideally the process is informed by pedagogically tested theories of learning and may take place in student-only, teacher-led or community-based settings. The outcome of this instruction may be directly observable and scientifically measured or completely hidden and assumed.