When you say Americans you are probably referring to residents of the United States, to which the answer would be no. There are no legal requirements pertaining to successfully completing a high school curriculum. Only those pertaining to truancy. Most states require children to attend school until the age of 16.
You need to graduate university not high school to get a degree
you need to graduate high school, and also need to graduate medical school
I believe it's 42 but, you may need to confirm that.
you need 1,000 to graduate
In high school, you can graduate with a high school diploma.
You need to be either in high school or college or you can be a graduate.
You do not need to be a high school graduate to attend truck driving school. You do need to have a valid driver's license and in most states you need to be over 18 years old for insurance purposes.
You graduate high school with a high school diploma.
You need at least 24 credits to graduate in Cincinnati, Ohio.
You need about 23 credits to graduate.
you have to have a minimum of 28 credits to graduate high school. But it varies in different school districts as well and different schools
23.5