Well one might argue that schools are indeed like prisons, or open prisons...Enforced conditioning of the gullible is essential to achieving a reasonable state of social cohesion...Not so many will go on to self read and question the system...And those that do have little influence over the compliant masses.
Of course, the above is a generalisation based upon longer periods of social stability and doesn't include brief interludes of social unrest and regime change. Nonetheless the outcome of social unrest and change will only seek to re-establish the same system in a slightly different format.