That depends on what the school system is in your country ! Different countries have different leaving ages.
You start school (usually) at 6. Add 6 to 1964= 1970 is when you started school. You go to school for 12 years 1970+12 = 1982 is when you should graduate.
1988. If 18 years old. If 17 when graduated, then 1987.
If you were born in 1999 you would graduate from high school in the year of 2017.
You were born in 1945 (2012-67).
2020
If 21 when graduated it will be on the year 1991
You start school (usually) at 6. Add 6 to 1964= 1970 is when you started school. You go to school for 12 years 1970+12 = 1982 is when you should graduate.
1988. If 18 years old. If 17 when graduated, then 1987.
You were born in the year 1970.
You would graduate in the year 2008
If you were born in 1999 you would graduate from high school in the year of 2017.
You were born in 1945 (2012-67).
2011
2020
1995
1970
You were born in 1970