Every Tuesday, Carina goes to work in a bank. She knows all her customers very well, because they are her classmates. In fact, Carina and her customers are all 10 years old. Carina‘s bank is in a school in Chicago. The bank is a branch(分支) of a national bank, but the children run the bank. It is open for 30 minutes on every Tuesday morning, Carina opens the bank. Her classmates put their money in or take their money out. The bank pays interest to them. The idea for a school bank came from their teacher, Mr. Harry Bassett who took his idea to the national bank. The bank agreed to his plan. "We want to give the children a chance to learn about money," said Mr. Bassett. "They are trained to look after their money carefully.” The school bank opens once a week. Mr. Bassett is a teacher who came up with the idea for a school bank. Carina‘s bank is a branch of a national bank run by some children and teachers. The school pays interest to the children who put their money in the bank. This school bank is set up to train the pupils to earn money.