A+ Teacher's Aide app for iPhone and iPad

Grading
Both weighted and total points options
Drop lowest or drop specific grades

Attendance
User-defined attendance statuses
Track behavior using attendance
Automatically compute grades from attendance

Reports
Individual and class level graphical reports
E-mail reports to students or parents
View/e-mail reports as HTML or spreadsheet

Data
Privacy: data stored locally and only accessible by user
Import course/student data from CSV files
Backup data to e-mail or Dropbox

More
User-specified grading scales
Privacy protection with app passcode
Generate random student or groups
Contact students through text, email, phone
Import student data from Contacts