You haven’t answered the question -— what about subjects that are objectively true, where no teacher can BS his subjective opinion?
You know -— algebra,calculus,trigomometry, physics biology, chemistry, engineering, etc.
Ok, you don’t like Pearson, can you give us a better alternative?
Whether or not I "like" Pearson is immaterial. They have big bucks and political muscle backing them up to the point where there is essentially no current alternatives that can get past the majority of the credentialed/gatekeepers. Maybe someone else knows about the "alternatives," but I have seen the leviathan in action, and they can turn STEM subjects rancid without breaking a step. Common Core is just one of the plans of attack.
Sadly, my late father - a teacher, as was my mother - predicted this in the 1980's, and encouraged me to go into private industry rather than use my then-new teaching certificate in the public schools.