No one said that. But teaching science often is about a single most commonly accepted theory. Research is something different. The Idaho edict involves teaching and says nothing about research. Further, evolution is the single most commonly currently accepted theory regarding origins of species.
That is exactly what the article said. "University of Idaho President Tim White has entered the debate pitting Charles Darwin's theories of life against religious-based alternatives by forbidding anything other than evolution from being taught in the Moscow school's life, earth and physical science classes. "
The fact that people who claim to be interested in pure science would agree to eliminate all but one hypothesis from consideration belies their stated beliefs in scientific method. This isn't about science anymore. I'm not sure it ever was.