How do i help her i r eally want to?

ok theres a freshman girl in the cl im a teacher istant for and shes really pretty but some guys keep making fun of her and its really killing her inside and i know it and see it i just wnat to help since she always seems to be the first one to help me with my shyness problme i just dont know what to do please help im tired of such a beutiful girl being called a what do i do