For Mac OS users, there is a system setting that may not allow you to tab onto several types of elements in a web page. To change this setting:
7:50 a.m. - All graduating seniors report to the auditorium. 8:00 a.m. - Announcements 9:30 a.m. - Class picture at stadium 10:15 a.m. - Banquet lunch in cafeteria Dismissal - When all necessities are completed 2:00 p.m. - Academic signing