Complex sentence: Every student and teacher has a unique username/password combination to access their own area of the network; as of 2007, every permanent teacher has a laptop provided by the school, and all registration throughout the day is controlled through the student information system.
Split into simpler sentences: Every student and teacher has a unique username/password combination to access their own area of the network. As of 2007, every permanent teacher has a laptop provided by the school, and all registration throughout the day is controlled through the student information system.