The latest results come as city residents prepare to vote in November for a School Board that will see at least five new members and that will have to decide whether to continue with Superintendent Dana T. Bedden’s efforts to change the long-troubled district.

Jeffrey Bourne, chairman of the city’s School Board, said Wednesday that the district continues to implement changes that he’s confident, in time, will lead to better performance in the classroom.

He said the district continues to struggle with high turnover and teacher vacancies, which are affecting what happens in the classroom. Dealing with those and other fundamental issues are of paramount importance if Richmond schools are going to turn around, he said.

One example of how attracting and maintaining teachers is affecting individual schools, and in turn test scores, is Richmond Community High School.

According to the education department’s report, the school’s math scores dropped from 90 percent last school year to 77 percent. Bourne said the school’s math teacher was out on extended leave for several months, and the “effect that that had on the students and the success can’t be overlooked or ignored.”