I find that the most powerful use of technology in education is when it opens up learning opportunities for all students.
This being crucial for students who may not be used to traditional teaching styles but still understand the content and can express that just might not be in words or verbally. Examples of this being home schooled students, ESL students, and students with learning disabilities to name just a few. This opening doors for many students who may not test well or write essays conveying their ideas or the content the way they want an opportunity to show that they do know the material in new and other ways.