I tried playing around with it (and will continue), but so far I haven't been able to do anything (sorry). But worst case scenario, you could do a print preview and see where you want the next page to start, go back to the sheet and enter a page break. Hope that helps, until you can get a better solution.

*Edit*
Also, you could give each student their own sheet or maybe make multiple columns (i.e. Mary Doe gets A-C, John Smith gets D-F, etc.). If you keep the same format (only 3 columns per student) all the columns will remain on the same page for a student. That's the only solution I've been able to come up with so far.