try this

Assumed you have date in Cell A1, In cell B1 put this formula
=IF(AND(A1=DATE(2008,9,1),A1<=DATE(2009,1,15)),"F all",IF(AND(A1=DATE
(2009,1,16),A1<=DATE(2009,5,31)),"spring",IF(AND(A 1=DATE
(2009,6,1),A1<=DATE(2009,8,31)),"summer","")))

On Jan 29, 1:17*am, Cazumel wrote:
I have the following situation:

Fall semester:
This year, if the account start date (Acctstrt) is equal to or greater than
09/01/2008 and the account stop date (Acctstop) is less than or equal to
01/15/2009 this is considered fall

For the spring we should consider anything with an Acctstrt date greater
than or equal to 1/15/2009 and an Acctstop date of 5/31/09.

Summer semester:
There may be some summer appointments in the system already (probably only
for the sciences and psychology), if there are the Acctstrt date should be
06/01/2009 and the Acctstop date should be 8/31/2009.

How do I build a formula to recognize this?