When is fourth form?
Score: 4.9/5 (12 votes) First form = 6th grade (about 11 or 12 years old), second form = 7th grade (12 or 13 years old), etc. So fourth form girls are in 9th grade and are about 14 or 15 years old. Fourth form and upwards = 9th, 10th, 11th, and 12th graders -- high school students, in other words.Wh...