Spartan boys left their homes at 7 to be trained to become part of the army and defend Sparta. Their education was strict and focused around physical strength. Boys under 17 also learned reading, writing, dancing and singing. Older boys trained for the army, learnt survival techniques and finally joined the army when he turned 20.
Spartan Girls stayed at home until they were 18 years old. This was primarily so that they were fully mature when they had to marry, therefore increasing the chance of a strong healthy Spartan baby. Boys and girls were kept apart from the age of 7. Female Spartans wore short dresses with slits down the sides for practicality and improved mobility.
Athen Boys began drinking wine at the age of 3, and began school at 7. There they were taught math, to read and write and to play a musical instrument. Physical education was extremely important in Athens as well as Sparta, and sports included Archery, wrestling and swimming. More wealthy were taught to ride a horse. By age 18 all boys were expected to attend military school. By age 20 they graduated. In Athens, it was often the case for boys to reach the age of 30 before they participated in politics. It was also around this age that they usually married.
Girls in Athens stayed at home until they were married. They could not choose who to marry, all was decided by their fathers. Once they gave birth their fathers could not take them back, and it was very difficult for a woman to divorce her husband. Whilst at home, all girls learned domestic jobs such as weaving, taking care of children, embroidering, and cooking. Girls were able to attend festivals, funerals and sometimes visit neighbors.
Explanation: I hope this helps :)