The school systems have no business pushing the role model of their picking on your kids.Political and religious matters are the responsibility of the parents.
I think you are going too far.
There is nothing wrong with the school system pushing role models, as long as those role models are people who have actually achieved something, are acknowledged as national heroes by more than some 50% of the population, and, preferably (to avoid Stalinist effects) dead.
Good American heroes that should certainly be taught as role models to children include:
Benjamin Franklin
George Washington
Thomas Jefferson (although the teachers should explain about his slaves)
Abraham Lincoln
Franklin D. Roosevelt
Ronald Reagan (although teachers will probably not like him)
Rosa Parks
Martin Luther King Jr.
I think they should also include one or two Indian chiefs or heroes. They are part of American history and can be role models.
But it must be done without rewriting history (for example making everyone Democrats or something like that) and WITHOUT regard to skin colour (although I fear that American teachers might have a tendency to add skin colour to individual achievements).
What is unacceptable is promoting a current President as a role model, promoting a live person as role model (unless that person has retired), promoting anyone as role model who has not yet achieved anything but was merely given the chance to do so by voters or circumstances, promoting someone because of his skin colour ("the first black President"), or promoting someone who is not universally (that is by a vast majority) acknowledged as a national hero.
(Note that Rosa Parks' and Martin Luther King's fight against racism is what made them heroes, not the fact that they were black while doing so.)
I think it is safe to say that if there is a national holiday for a person, that person is a good role model for American children.