To be a chav is a choice. To be a "paki" is not. People who choose to act unacceptably merit condemnation.

Being told at school to concentrate and work in stead of staring out of the window at the pretty leaves does not exclude you from society. You can, if you choose, concentrate and work. If you don't - your choice. Those less abled or somehow disadvantaged (including by backgrounds where learning, reading, coherent speech, or mathematics are not normal) deserve help.

Those who won't learn (for example because something is mathematical or geeky) earn the consequences.