Uniques monthly is totally meaningless.

This comes up with some frequency. Uniques daily * 30 != uniques monthly, after all, if you undouble on a monthly basis and you get 30K visitors each day and they're all different it looks like you have a cool 900K uniques monthly. But at the same time it means you are completely not sticky! All your users are replaced by new ones every single day.

A better measure is uniques daily, daily growth in uniques and compare that with your uniques monthly. If you're doing it right you should see (30average repeats) + (30average growth)

Those are figures that you can do some planning on. Monthly uniques does not do anything other than look good on paper. Bad websites look even better :)

As I understand it, Quantcast's monthly uniques is the totally number of different users to visit the site during that month. I assumed that daily uniques were meaningless because of the nature of SchoolRack. Not every student logs in every day. It seemed reasonable to assume that a month is a reasonable amount of time for most students, teachers, and parents to login at least once. This tells you the actual number of people who actively use such a service.

only if you put the stats script on the pages behind the login and not on the others.