Did you enter the School number on the state info page ?  Then down below on info screen, make sure the SD100 check box is checked.  Then on form SD100 be sure to check the activate SD100 box. On the School residence and income smart worksheet, enter the school number, enter the dates lived there, select primary, spouse or both depending on filing status. Enter in MAGI or if its a earned based income school you enter that in next to the MAGI section.