* Steve Jobs, the co-founder of Apple, did not attend preschool.
* Bill Gates, the co-founder of Microsoft, did not attend preschool.
* Mark Zuckerberg, the founder of Facebook, did not attend preschool.
* Barack Obama, the former President of the United States, did not attend preschool.
* Oprah Winfrey, the television personality and media mogul, did not attend preschool.