iOS 7 issues

Since I have downloaded iOS 7 my planner has become a day out. My schedule is still correct but when I add a task for that lesson it saves to a different day. Any ideas?

It is strange Miranda,
Does your week include all days from monday to friday?
Have you tried adding that lesson from each class' diary instead of from the planner?
If still can't sort it out, and if you don't have any inconvenient, send my a recent backup to support@idoceo.net and I'll give it a look.