This study did not study male and female teachers independently, so this does support the claim that female teachers are any different (or worse) than male teachers.
Furthermore, it is notoriously difficult to get to causation from correlation. If you'd like to read more about this, check out Judea Pearl's work.
>When it comes to teachers' marking, the study says there is a consistent pattern of girls' work being "marked up".
>Teachers are said to reward "organisational skills, good behaviour and compliance" rather than objectively marking pupils' work.
https://www.bbc.com/news/education-31751672