Did the Spartans or Athens release boys from parental at age 21?

In ancient Greece, Athenian boys typically became citizens at age 18, undergoing a transition that included military training and civic education, but they were not "released" from parental control in a formal sense. In contrast, Spartan boys entered the agoge, a rigorous military training system, around age 7 and were considered full citizens at age 30, though they had more autonomy during their training. Therefore, neither city-state formally released boys from parental authority at age 21; the processes and age of transition differed significantly.