1) Improves accessibility. Students who miss classes have the opportunity to catch up. Even for those who were in the class, this is useful for reinforcing what they learned. Parents who are active in their education can access and monitor student progress.
2) New generation students are more comfortable using technology. They use their cell phones for everything from chatting to studying. So this is in line with what students are expecting and comfortable with.
3) This also also makes the school districts look good. They care about students and provide additional opportunities for learning.
(a) The opportunity to access procedural learning from any location and (b) the use of writing as a modality to improve student retention of topics studied.