The ages work as follows:

Girls Division I (Born 05-07) 01/01/2005 - 12/31/2007
Girls Division II (Born 02-04) 01/01/2002 - 12/31/2004
Schoolgirl (Born 2000-2001) 01/01/2000 - 12/31/2001
Cadets (Born 1998-1999) 01/01/1998 - 12/31/1999
Juniors 09/01/1994 - 12/31/1999

Cadets can wrestle in the Junior division (assuming they are enrolled in HS)