If I had the right to add one course in high school, I would suggest adding a course on personal finance and money management. This course would cover essential topics such as budgeting, banking, saving, investing, understanding credit and debt, and making informed financial decisions. It is important for young people to develop financial literacy skills early on to navigate the complex world of personal finance effectively. This course would provide valuable knowledge and skills that students can apply throughout their lives to make wise financial choices.