You often learn spreadsheet and database software in this program. It can be helpful to learn this software before you begin the program.
People who work in this field need a good understanding of the broader culture in which consumers make buying decisions. For that reason, you should take a wide selection of courses in non-business subjects. Good skills in writing, speaking, and critical thinking are needed for advancement in the business world.
Some business courses in high school can be useful preparation for a career in marketing research. However, you should take only a few, especially if you intend to earn an MBA, so that your high school transcript shows that you are preparing for a demanding college-level program.