gould is still on board. why? she says discipline problems dropped 76% since the change and students now are more motivated than ever. deborah feyerick, cnn, westminster, colorado. >> 2011 national teacher of the year michelle shearer is with us. michelle, should school by school, this be how we tweak things that work for them? should there be strict national standards? is there a place for a gradeless grade school in the system, do you think? >> i can relate it to the concept. i teach ap chemistry and within my own classroom i teach 10th, 11th and 12th grade students. that's a combination of students ages 14 through 18. it works for that course at the high school level. i think it's interesting that they're experimenting with this at the elementary school level. how does this work, interdisciplinary -- with interdisciplinary connections? if a student is at a fifth grade level in reading but yet at a