We learn certain general subjects like this in science mainly to learn critical thinking, analytical/logical reasoning skills, how to apply the scientific method (which, yes, can come in handy in many areas of life besides science).

Given your previous claim:

No high schooler is EVER gonna pay even the slightest bit of attention if we incorporate a “taxes and accounting” class. No shot.

What makes you think that they’d be any more likely to pay attention to any other subject matter?