After what events did educated slaves appear in the homes of the Roman wealthy?

It is known that Rome was a slave state. Educated slaves in the houses of the Romans appeared after Rome conquered Greece. Since then, they began to transport Greek slaves to Rome, where they were bought by the rich as servants in their homes, as well as to educate their children.

One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.