Teacher Unions spend union dues on politics to advance the agenda of the left. They have a monopoly on public education and they really don't give a rip about education. As with most left wing liberal operations the motive is cold hard cash. Listen to these teachers give you the real skinny on teacher unions:
The Truth about Teachers Unions from Union Facts on Vimeo.
BTW, Barack Obama has the fully support of teacher unions (I wonder why?) Ok, I'll break it down for you. They piped lots of cash into his campaign, so he owes these brutes. This translates into teachers in public schools who have no burning passion to educate but are just showing up for their good "guvment" jobs. Barack Obama knows that public schools have their hands tied and must hold on to bad teachers. Inner city school children are assigned to governments schools like chattel while the children of the liberal elite are sent to private schools which wouldn't be problematic if these hypocritical libs were not blocking school vouchers for the parents of inner city children. They are willing to spread the wealth but not willing to spread the "quality education". Wake up black people liberal democrats are not your advocate. They want to keep you and your children dumb and dependent and this agenda is at play on every level and facet of public policy.