Passage: Boys from wealthy families attending the private school lessons were taken care of by a paidagogos, a household slave selected for this task who accompanied the boy during the day. Classes were held in teachers' private houses and included reading, writing, mathematics, singing, and playing the lyre and flute. When the boy became 12 years old the schooling started to include sports such as wrestling, running, and throwing discus and javelin. In Athens some older youths attended academy for the finer disciplines such as culture, sciences, music, and the arts. The schooling ended at age 18, followed by military training in the army usually for one or two years.A small number of boys continued their education after childhood, as in the Spartan agoge. A crucial part of a wealthy teenager's education was a mentorship with an elder, which in a few places and times may have included pederastic love. The teenager learned by watching his mentor talking about politics in the agora, helping him perform his public duties, exercising with him in the gymnasium and attending symposia with him. The richest students continued their education by studying with famous teachers. Some of Athens' greatest such schools included the Lyceum (the so-called Peripatetic school founded by Aristotle of Stageira) and the Platonic Academy (founded by Plato of Athens). The education system of the wealthy ancient Greeks is also called Paideia.

Question: Paideia was for wealthy who?
ancient Greeks