So you're under the impression that the appropriate venue for scientific (or putatively scientific) ideas to compete is the high school classroom or textbook?
When there is serious debate, children should know about it. Science does change and develop, and this year's hot new discovery becomes last year's aether or phlogiston.
My own opinion is that Darwin will be out the door in about ten or fifteen years, everywhere except maybe in our public schools, where liberal judges will remain adamant.
Seemingly Darwin has had nine lives, and when each brand of neo-Darwinism is disproved, another springs up to take its place. But Marx is dead, Freud is dead, and in due course Darwin, the third great purveyor of the hermeneutics of suspicion, will be dead.
In the meantime, students should know that the issue is debated.