You have to accumulate 30 credits toward your degree each year (including summer).
please see FAQs regarding scholarship
When I went to the NYSASAC meeting in June the excelsior is not guaranteed money. If too many people apply and are eligible there will be a lottery for the scholarships.
So far with yesterday’s application deadline there have been 70k applications:
The State University of New York had 47,984 applications for free tuition, while the City University of New York had 22,233
Maybe some of these numbers will go down as a result of you cannot double dip (meaning students may not be eligible because they receive enough TAP and PELL to cover their tuition).
The excelsior scholarship has also cause a surge in applications at SUNY. The school that may have been a lock for you last year, may be a reach this year.