The court said that it took into account provisions made in the European Treaty on Human Rights and decided that all E.U. countries should allow its citizens to practice their religion in complete freedom.
The court ruling does not cover a general ban on Flemish schools in the region but the 11 students will be able to wear headscarves in their schools 30 days later.
Coşkun Beyazgül, the general manager of the Belgium Diyanet Foundation, which is linked to Turkey's top religious body, said that the agency also took part in the case to support students.
He said that the court ruling would be an example for other cases in the country.
In 2015, Belgium's Flemish Community Education Authority (GO!) banned headscarves at state-run Flemish schools.
