If it makes you feel better, financial literacy courses for high school students are shown to have just about zero impact after one year. Apparently high school students don't listen to strangers who are lecturing them in classrooms, who knew?
I'm a big supporter of financial literacy, but I also love data. The data shows these kinds of efforts aren't effective. I see nothing wrong with cutting them, it might even be mustachian. (As an example of why this doesn't work, remember the last time you talked to the average person about early retirement? Remember that moment when their eyes glazed over? If you are thinking of the second they realized what you were talking about you are remembering it accurately.)
But is it HOW the information is being taught? Rote learning is a terrible way for alot of people to learn. Its useful in certain amounts. However to me financial literacy ought to be taught like shop class or home economics - here is a fictional $10K for each of you and over the course of the semester or year we are going to budget and spend this money. Your individual choices will cause your money supply to increase or decrease. Then at the end perhaps we'll look at stats for the class and compare them to broad brush stats for the nation.
Part of the time we'll be talking about how mortgages work. How college tuition works. How buying a car works. How savings works. Debt. investments, etc.
I had "Economics" way back when and some of the concepts that my teacher taught sticks with me today. The concepts rather than the vocabulary words.
Another teacher split us into teams and we played investment games one semester. Real data from the daily newspaper, fictional money. What I would have done differently was speed up time. Start out using data from 75 years ago and check in on the data every 5 or 10 years so everyone could see how the money compounds. Maybe throw in The Great Depression and WWII.
I would be suspicious of studies that say this is a low value subject to teach students until I knew where the data was coming from. Who is funding it? If it helped a portion of society reach adulthood without drowning in debt I'd be satisfied. Of course all those retailers of high cost items and low quality loans (title loans, 24 check cashing places) might disagree.