The web is playing a central role in distance education. The word "usability" is usually synonymous with functionality of the system for the user. Also, usability of a website is defined as something that can be used by a specific group of people to carry out specific objectives in an effective way, with efficiency and satisfaction.…

School-wide positive behavior support (SWPBS) has been implemented in more than 4,000 schools as a means of addressing problem behavior in a systemic fashion. Preliminary outcomes (e.g., office discipline referrals, suspensions) indicate the effectiveness of SWPBS in decreasing school-wide behavior problems and creating a positive school climate.…