The Vice President. The V.P.'s Job: The only duty the U.S. Constitution assigns the Vice President is to act as presiding officer of the Senate. But the Vice President also serves as ceremonial assistant to the President and is an important part of the President's administration.
The ages of middle school students are: 6th grade: 11 - 12 years old 7th grade: 12 - 13 years old 8th grade: 13 - 14 years old.
These days it is 75 for men and 84 for women, so male middle age is 25-50 and female middle age is 28-56 Clearly most people don't use the phrase literally but divide adult years by 3, discounting time spent as a child.