[Koha] My Koha is up and going -- Looking for reading levels

Wow, I am feeling great that I have Koha 3.0 going. The new question I have is does anyone search their library catalogs by reading level. In 2.8, I could search by Lexile 360 and get all the books that had Lexile and 360 in the record. It wasn't perfect, but it was an additional way to search that my teacher's liked. Any ideas of how to set it up in 3.0? Thanks for any ideas, Darla -- Darla Grediagin District Librarian Bering Strait School District Unalakleet, Alaska Web Address : http://bssdonline.org/course/view.php?id=51 Blog: http://aklibrarian1.edublogs.org/ OPAC: http://opac.bssd.org:8181/cgi-bin/koha/opac-search.pl