An increase in lifetime earnings by 10% can be attributed to good math skills. English and maths skills are essential for many jobs. If a student wishes to start their own business, they are likely to be the two most important skills. If they cannot do math, they will not be able to figure out how much something costs, how much to spend and win to make a profit, or how to handle their accounts and charge returns. Communication is also important in business, whether in writing or in person. Business communications need to be clear, accurate, and sometimes interesting, powerful, and creative. Bad grammar or punctuation can do lasting damage to a campaign. It is also possible for students to read legal documents, such as contracts, agreements, reports, letters, and informational materials, and to type them.