I own a business that deals in fabricated, heavy plate and precision machine parts. A number of years ago I instituted a preemployeement test would give me some idea of their skills. I have found that 99% of the applicants that put in applications do not even have 3rd grade math skills. Black, white or brown - if you cant read a tape measure or convert a fraction to a decimal then I have no use for you because you will not be able to work.
Another example of the power of government run schools and and their tendancy to produce substandard products.