How do you say ' she is a grade 9 student at xxx school. she was born on xx/xx/xx and is currently 15 years old."
also, how do you say ' her talents include speaking two languages, english and chinese? '

She is a grade 9 students at xxx school = Elle est en 9ème année a l'école de Gilles

She was born on xx/xx/xx and is currently 15 years old.= Elle est née le 12/12/2000

Her talents include speaking two languages, English and Chinese= Ses talents incluent parler deux langues, Anglais et Chinois

I hope that's help;0