I saw this on an online application for a job:
Bachelor's Degree (±16 years)
I have not seen this on any other applications of the sort. What does the ±16 years mean?
I'd second Dan's comment that this is the number of years of formal education. In Canada there are 12 grades of elementary and secondary school, which isn't counting pre-school and Kindergarten, then adding 4 years for a Bachelor's degree would give a total of 16 years of education. I'd suspect in the US there could be similar totals giving that number of years of total schooling.