I don't see anything inherently objectionable with the language of the bill.

"...helping students understand, analyze, critique, and review in an objective manner the scientific strengths and scientific weaknesses of existing scientific theories...."

Being able to openly and freely criticize scientific theories is at the core of how science works these days.

As for teachers using this law to teacher creationism, hopefully anybody from an objective perspective, with the aid of the scientific method and recent scientific findings, can come to the conclusion that the current definition of creationism is not possible.