Answer:
A ruler of a country. (This answer makes you see ambitious and like a leader, things that teachers like to see.)
Early marriage might sound a bad idea to a lot of people these days as not everyone is mature enough to take on such a big responsibility at a young age but actually someone people can go through it and its hardships. There are young but mature people but not a lot, those who are not mature and know how to take on such a responsibility, should wait till they are older for marriage.
A storage section. (20characterlimit)