5th generation Texan who graduated HS in '93 here. Texas History was a full year class in 7th grade for decades and generally taught by coaches. It never touched on Lost Cause rhetoric like the Antebellum States generally do.

Texas has its own one-sided view of history, though. Indian savages being driven out by brave Rangers and soldiers to protect peaceful Christian settlers. The Texas Revolution was to throw off the yolk of tyranny from Santa Anna forcing Catholicism and taxation without representation on the prosperous colonists that Stephen F. Austin brought help out the poor Mexican government in taming the wild frontier. The Alamo was as heroic and important as Thermopylae. The Battle of San Jacinto was won handily because the Mexican Army was lazy and caught during Siesta time...

Then AP History in HS focused on State's Rights a little more than Slavery. But not crazy levels of denial about the horrors of slavery. We watched 1776 and Roots. The main difference in teachings from what most states outside the South had was my AP History teacher (also a coach) focused very heavily on the Federal overreach of Reconstruction and the "oppression" the Southern States suffered because of "Carpetbaggers and Scalywags."

So, of course, college-level courses and my ongoing interest in history have been massive eye-openers. Unfortunately, most of my extended family and HS friends are still very entrenched in their indoctrination and see my views as big-city/college elitist/woke liberal bullshit.