To date, I'm not sure that any innovation, including personal computers, has changed the structure of schools. For example, teachers and students have relatively little decision-making authority. For the most part, we work within a lock-step hierarchical management system that favors decisions made with complete information and standardized curriculum within strict departmentalized organizations. This means that we're encouraged not to take many risks or to venture beyond our classroom. In turn, our classrooms take on a prescribed structure.
Memorization continues to be valued over critical thinking.
Individual work for both teachers and students is still the norm. Sadly, too much of our application of technology today is contributing to this assembly-line model of curriculum. One of the keys to appropriately applying technology to improve schools on a national level is to appreciate that training teachers to use computers or any technology isn't simply a matter of introducing something new. It's really closer to a moral dilemma for a teacher. Since there's essentially no time in the school day for professional development, any time given to training is very precious.