Why would a scheming, greedy, profits-driven opportunist ever educate their children? Education costs money and resources and risk revolution; much better to impress a basic trade skill on your children and lock them into indentured servitude to the family. (The Ferengi have been mentioned to do something like this). You want your slaves to be just intelligent enough to speak and do their menial tasks, but not so intelligent that they have second thoughts about their rightful place in the grand scheme of things (in a dingy factory, pulling levers).
Children would be born prolifically, probably in vats or some other bulk-production system, as the only employees these merchantilists* would have full control over, for their entire lives, are family members.
So, to answer the question directly: The Volto educate their children by brutal example (natural selection). Many of their children will just make the best out of it that they can, learning quickly that pulling the lever faster gets one some minor increase in benefits (closer to an air vent, or a less-squeaky lever). Strong arming other workers into pulling their levers faster gets one a promotion to Supervisor and a plasma whip. They'll naturally learn to use their brute force to take what they need. Supervisors who don't punish their crews enough will be demoted back into ranks, where the next Supervisor will literally whip them into shape. Supervisors who are too brutal will decrease the productivity of their crew, and likely be terminated. The harsh (plasma pistol) firing will serve as a lesson to other Supervisors.
And some of those children, maybe one out of every vat-load, will be born with extra intelligence. When a Volto parent discovers one of their children organizing the other children into working for them (think Tom Sawyer, not labor union type organization), they pull that kid out of the mines and move him or her into Management (before they damage the Prole worldview too much). The ability to manipulate their fellows without force, but with the invisible hand of economic theory would be taught to them, on the job. They'll learn, or they'll go back to the mines, and their bretheren will be all too happy to get their hands on the "suit" who reduced their water rations to save on repair parts for the water pumps.
This, in fact, will be the biggest weapon used by the Management class against their own staff: do what I tell you to do or you go back to the mines to die at the hands of the Proles. Life in Management is a swift learning experience because your life is one check-mark on a form away from ending brutally at the hands of your oppressed under-family. One will learn how to manipulate their fellows, wring every drop of profit out of their under-family, and backstab each other to gain rank or cover their butts. Only the most backstabby, vile members of the family will survive to be a Parent, the C-levels of society.
Many will fail back into the mines as scapegoats or victims of purges, some will settle in the middle ranks as a headcount, doing just enough to keep their berth and having so little motivation for upward advancement that their supervisors never have to kill them off for safety. And those with the best biological makeup to be the scum of the scum will be the only members with enough pull to make it to the C-Level and become part of the next vat's gene pool, thereby building those features in to their family's DNA. Proles mate with Proles to fill out the working class, and C-levels mate with C-levels to increase the efficiency of the Management class.
(* Many writers make the mistake of having uber-evil Capitalists, but that falls apart, as many features of Capitalism run contrary to the very overbearing, backwards minded concepts of these societies. For an example, take Star Trek: DS9. The Ferengi didn't even let their females wear clothing, and consigned them to the house, thereby pre-emptively shutting down half of the workforce (and half of the available market for goods! Women not buying clothing?! I couldn't not buy shoes!) A whole season's worth of Quark episodes surrounded the Ferengi Grand Nagus turning into a banking and industry genius, only for Quark to find out that his mother was the actual intelligence behind the throne! All those middle managers, marketing executives, and (yes) shuttle mechanics being forcefully excluded from the market? That's not Capitalism!
That's more like Mercantilism. Keep your resources internal. Exploit your workers to the bone. Refuse imports, focus on exports. Your aliens are more Mercantillist than Capitalist. Just a little detail to write in.)