Can a Pell Grant be carried forward for future year educational expenses

So my son just finished his community college education and has $1500 excess Pell grant funds (grant exceeded tuition and books.)  He is now starting his remaining 2 years to get his bachelor's degree at a 4 year college. If he receives Pell grants there, it will not fully cover the cost of tuition.  Can I (and my dependent child) choose to NOT report the $1,500 excess as taxable income in the year it was awarded if the excess definitely will be used for tuition for the following academic year at a 4 year college?