(b) The guidelines developed by the department of education pursuant to paragraph (a) of this subsection (3) shall include, but shall not be limited to, the following for preschool, kindergarten, and grades one through twelve:

• (III) The recommended hours of instruction in physical education required to ensure that students not only develop healthy muscular and cardiovascular systems, but that they also develop skills and knowledge to enable them to remain active and healthy throughout their lifetimes.

(5.5) On or before October 1, 2008, each school district board of education is encouraged to expand its local wellness policy adopted pursuant to subsection (5) of this section to include goals for:

• (a) Increasing the availability of courses in physical education, including but not limited to, for a school district that enrolls more than one thousand five hundred students, establishing the goal of ensuring that all physical education classes offered by the school district are taught by persons who are licensed and endorsed pursuant to article 60.5 of this title to teach physical education.