I'm a student of the New York public school curriculum (11th grade), and I can safely say that we also do not invest time in such silly fantasies as Newton- in history class (Physics and Pre-calculus have mentioned him for the sake of history). We do not learn many "advances of military technology" that have influence on US politics (though in state curriculum, the Maxim Machine Gun, and nuclear weapon breakthroughs are mentioned).
We've also learned more about General Lee or "Stonewall" Jackson (for those uninformed, Confederate war-time heroes), than we have about Grant.
"Thomas Jefferson wrote the Decleration of Independance" is the extent of our study on one of our country's fathers.
So Texas is going from what may have been a good curriculum to the New York State curriculum.
And stop with the "false history" crap! It is in fact, true history. They are not creating facts, they're emphasizing certain ones more than others.
[Note: All but the first line aren't directed at you parent poster, this was just the hole I creept into to say this]
Cheers.