What is the stopping rule for choosing one's years of schooling?

Question

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The stopping rule for choosing one's years of schooling should be to end one's schooling when the rate of return to one more year of schooling equals the worker's rate of discount. This means that the marginal benefit of additional schooling is equal to the cost of acquiring it. Any less schooling may result in a lower earning potential, and any more schooling may result in diminishing returns.

What Is the Stopping Rule for Choosing One's Years of Schooling