What if the science of negotiating peaceful ends to wars was a required subject in high school, along with the other STEM courses?

Won't happen. Wars are good for business and politics by other means. If they taught that the domestic war propaganda would not work.

Conflict resolution is an important life skill that isn’t taught in schools

Appeasement has always been taught by those who would rather compromise with evil than fight, but wars have to be fought against brutal thugs who want to take away the freedoms of others for their own selfish personal gains.

Yes, things would change. While there is a human condition element to war, if people knew how to negotiate to a peaceful end there would be less likelihood each side's ego could get in the way. Instead of playing the game, we change the game.

No, greed would still fuel endless war. You have to change hearts of mankind to end war.

They would call the course CRT and burn it,