All of these subjects are difficult to retain for teens. Some do it well and others don’t care for rightful reasons. Public schools have plenty of math classes and science but it’s not just a teacher’s job to make sure you get it, you also must be interested and curious; and many kids aren’t. And frankly, I don’t blame them. With so much to distract; it’s hard to see why it may be important to pay attention. Also - adults leading by example (shortcuts) 

 These are fumdamental parts of daily social life.  One way or another, every person should learn about themselves (language), their environment (math), and cooperation with others (economics).  It doesn't need to be school that delivers those lessons, many learn them later in life.  But it's impossible to live a successful life without grasping the basics. 

 School does attempt to give you all of this information but what kids receive and what kids retain can be a huge difference. 

 It's hard to not retain something that you need to deal with daily.  It takes time & energy to create adults who can't balance a budget or answer the question "what is money?" but go and spend money every day 

 I can’t speak for everyone but personally, I retained very little from school because I just didn’t care. I had to develop genuine interest for information to stick.