It depends on the cut-off date for starting kindergarten in your state. Different states have different ones. Kids are normally 5 when they start kindergarten but the cut-off date means they must be 5 by that date to start. In many states, the cut-off is sometime in September so kids born in November are among some of the oldest kids in their class. In that case, the 11 year old in question would be in 5th grade. But he/she could be in 6th grade in other states that have later cut-off dates. Some states have it at as late as December.
4th or 5th grade, depending on when their birthday is.
3rd or 4th grade, depending on when their birthday is.
a 13 year old would normally be in 7th or 8th grade depending on whether or not they were born before September.
preschool or kindergarten, depending on when their birthday is
His birthday is November 5th 1987, so he'll be 23 this year
Yes, you are supposed to turn 18 either sometime during your 12th grade year or the summer after it, depending on when your birthday is.
a nine year old is usually in 3rd or 4th grade. Kids normally start 3rd grade at age 8 and turn 9 sometime during the school year or the summer after it (depending on when their birthday is) so then they begin 4th grade at age 9.
a 14 year old is usually either in 8th or 9th grade (also called "Freshman year"; it's the first year of high school). Kids begin 8th grade at age 13 and then have their 14th birthday sometime during the year; so they are then 14 when beginning 9th grade and will eventually turn 15.
Age Now = Year Now - Year of Birth (if the person has had their birthday this year, and one less if they have not).
This depends on the "cut-off date" in whichever state the child lives in. That means that when a child starts kindergarten (the first year of school), they must be 5 years old by that date. In many states, it is sometime in September, so kids with November birthdays are among some of the oldest in their grade. In that case, a 6 year old turning 7 in November would be in 1st grade. But if they live in a state with a later cut-off (some states have it at as late as December) and his/her birthday is before that date, then he/she would be in 2nd grade, and would be among some of the youngest kids in his/her grade.
A 14 year old is in 9th grade or in 8th grade.
A 13 year old would normally be in either 7th or 8th grade. You normally start 7th grade at 12 and turn 13 during the school year or the summer after (depending on when your birthday is), so then the normal age for 8th grade is 13-14.