Hi Sunflowers... the Qld Govt has changed the cut off date, so it is now the 30 June. This is from Ed Qld's web site:

Children born between 1 July 2002 and 30 June 2003 will be eligible for Prep in 2008.
Children born between 1 July 2003 and 30 June 2004 will be eligible for Prep in 2009.
Children born between 1 July 2004 and 30 June 2005 will be eligible for Prep in 2010.
Children born between 1 July 2005 and 30 June 2006 will be eligible for Prep in 2011.

So Brooke will be eligible for Prep in 2011, and grade 1 in 2012

Hope that helps