A council of Thai university presidents denied a request from a transgender advocacy group to allow male students to wear dresses at graduation ceremonies.

The decision comes after the Transvestite Network of Thailand on Thursday submitted a request to the nation’s education ministry to remove the dress code for transgender students at graduation ceremonies and in classrooms.

The group says the dress code causes mental stress.

According to Thaindian News, Siroj Pholphanthin, head of the council of Rajabhat Universities’ presidents, said allowing cross-dressing would be inappropriate because members of the royal family hand out diplomas.

Jiradech Usawad, head of the University of the Thai Chamber of Commerce, said the regulations are already ignored in classrooms, but he reiterated that the dress code for graduation ceremonies would remain.