How to force a certain date format?

We ask students for their birthdate, and it is displayed on the form as MM/DD/YYYY format.  I even have "4-digit Year", below the year box.  But, surprisingly, some students don't read.  So they are entering a two-digit year instead of a four-digit year, and that messes up our dataload.  I am using the Quick Field date, which apparently will accept the two-digit year in the year field.  Is there a way to force the four-digit year (i.e., have an edit check that won't accept a two-digit year) using the Quick Field date?

Thanks,

Marilyn

Are you using Date field in this way:

I understand that even after the pop-up, you will be able to enter two digit year. So maybe you could use Date widget:

And here is how it works:

So, maybe you can use that widget for Date field.

Could that work for you?