[TomGuy]

In some industries, such as teaching, there is an oversupply of labour and too few job opportunities.

That has been a trend going back to the 1960s.

When the economy is going gangbusters, teacher shortages occur. When the economy tanks, teacher surpluses occur.

When things are good, many, even those who got teaching degrees, enter the private workforce because the pay, benefits and workloads are better. When things go bad, they try to return to teaching as a financial refuge.

It happens in every significant economic cycle.

[Rodamala]

Those that can not do, teach.