According to a study, girls studying in single sex ( girls only ) schools show better academic performance and progress off than their co-ed counterparts. Over the period of the study conducted, the researchers found all the girls studying in girls-only school did better than predicted, specially in science and math , while those in mixed-sex schools 20 % did worse than expected.
A lot of parents will look at the benefits of co-ed schools, like the fact that girls and boys are educated side-by-side preparing them for the world of work and life, but , its not a truth. Educationally aspirant parents could seek out girls-only schools, which could also make a difference.