Watkins, 45, has two children in Gwinnett schools and is supply chain manager for a commercial real estate company.
The votes occurred without discussion or comment.
The new leadership reflects the increased diversity on the Gwinnett school board. Watkins and Johnson’s installation this month created a majority of members of color. Watkins is Black and Filipina; Johnson is also Black.
Students of color are also the majority in the Gwinnett school district. Of the more than 177,000 students, 33% are Hispanic, 32% are Black and 11% are Asian or Pacific islanders.