Legitimate fields of study usually do not have trouble establishing their legitimacy to ordinary people. My undergraduate degree is in aerospace engineering. I’ve never had to argue from authority to get people to accept that’s a legitimate field that produces actionable facts.
I'm not sure that's true. The US system is staggeringly wasteful, partly because there are 50 states and thousands of school districts all making out that they are unique and different and need to find their own ways of doing things (a critique which could be leveled at the US more generally). This is an invitation to corruption and endless politicking.
Amid all the various studies and reports and education manifestos, you know what I never hear? Of policies derived from surveying students about what they think and what does or does not work for them. Generally when I bring this point up it gets dismissed with some variation of 'students will just ask for more time off and less work and standards will crumble' which I don't think has any basis in fact.