School grades in usa wikipedia biography
How many grades are in high school
Grades were first used as a kind of class ranking for conveying status and privilege (or withholding them).
School system in usa
Most children enter the public education system around ages five or six.
U.s. school names list
Students in the USA will usually commence their final year, 12th Grade / Senior Year, at the age of 17 or 18 years old.
U.s. education system levels
Sixth grade (also 6th grade or grade 6) is the sixth year of formal or compulsory education.