What he probably did was go to undergraduate school (college) for four years to get his bachelors degree, then he went to graduate school (maybe at the same place as his undergrad, maybe somewhere else) to get his masters degree (1-2 years depending on the program), then continued to get his doctorate (might be called an EdD for some education, not sure how many more years this takes). So he went through a lot of school to earn being a "Dr.".