Tell a joke about my brother and sister-in-law going to school

Through your description, my brother-in-law was admitted to graduate school, but my sister-in-law said that it is better to earn money at work than to learn well. She said this for two reasons. First, my sister-in-law and my brother have never been to school themselves, or their academic qualifications are not high. Seeing that her brother-in-law is admitted to graduate school now, she is psychologically unbalanced, that is to say, jealous, so the sour grape psychology prompted my sister-in-law to say that it is better to work and earn money. Secondly, my sister-in-law may say this because of poor economic conditions at home. If the brother-in-law continues to go to school, the family's economic burden is too heavy. But if the brother-in-law goes to work to earn money now, it can reduce the financial burden on the family. Sister-in-law expresses this view completely from the actual situation of the family.