Education must also perform another function: As various jobs become vacant, they must be filled with the appropriate people. Therefore, the other purpose of education is to sort and rank individuals for placement in the labor market 1997. Those with high achievement will be trained for the most important jobs and in reward, be given the highest incomes. Those who achieve the least, will be given the least demanding (intellectually at any rate, if not physically) jobs, and hence the least income.