A lot of the ones I've seen didn't seem to need any.
How many years of education you have had.
2 years
14+
3 years
12 years
years of education
Education in Sudan is free and compulsory for children aged 6 to 13 years. Primary education consists of eight years, followed by three years of secondary education.
75
hju
6
6 straight years
5-7 years