Why is the planner based on a week of work, instead of a day?

Because the student life needs flexibility.

Have you ever had a hard day and just not been able to focus on that tough philosophy reading? Have you ever gotten a last minute call for an extra shift at work? Have you ever spent the afternoon hanging out with a new boyfriend when you should have been doing homework? (I know you have...)

Having the planner based on a week allows that flexibility so you don't feel like your homework plan is messed up, or you're behind, or now you've got to adjust everything in your plan. Relax. Just do a little more tomorrow. But also know that you need to finish this work by the end of the week, so don't completely give yourself over to procrastination.