Assuming you're asking about the FAFSA and Pell Grant programs,
http://www.fafsa.ed.gov/fotw1112/pdf/Deadlines.pdf
I would check with the student aid office at the institution you're considering. The information from the Dept of Education link above says the deadline for 2011-2012 is June 30, 2012. You should verify that is correct.
Answered Apr 07, 2011
Edited Apr 07, 2011