It has also been about "free" babysitting, propaganda dissemination and groupthink, the establishment of a well-paid and militant voting bloc, a perpetual straw man to cudgel the electorate, establishing a perpetually - and endlessly - funded government bureaucracy/hierarchy, and the enrichment of those who provide goods and services to public schools (think "educational/corporate complex").
The one thing it is not about is educating the children of a free people; should that occur, it is a bug, not a feature.
It has also been about “free” babysitting, propaganda dissemination and groupthink, the establishment of a well-paid and militant voting bloc,
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You can tell if the teachers are ‘babysitters’ because their children do not learn anything...you ask a simple question and they really don’t know, that is the time you have a ‘in your face’ talk with the ‘babysitter’ and how much she/he/it likes the job...