iSchool is a study organizer and Timetable Schedule Planner, both for schools and universities. Very minimalistic but has everything you need. Convenient study-schedule, notes are attached to classes, homework with notifications, grades, grades analytic. Take a pictures or use voice recording as a note. Very simple. Very useful.
With iSchool you can:
Keep track of your study Timetable Schedule, make notes during your classes;
Track your tasks - homework, assignments, get notified in advance about deadlines;
Keep your grades, compute a grade average by semesters and overall;
Share your homework through the social networks or bluetooth interface;