The fact that all airline flights were grounded Thursday in South Korea so that students wouldn't be distracted while taking a test shows you how important the test is.
And then there are issues with Boeing, one of the worlds biggest airplane manufacturers has had its best selling passenger jet grounded around the world.
The 737 Max is Boeing's bestselling jet, but U.S. regulators grounded the model in March of 2019 after computer problems caused two of the planes to crash killing 356 people.