Set up a unique and effective "Language Lab" in your school, with scientifically developed tactile products and teaching/learning methods that deliver results.

Effectively utilize the scientifically proven fact - and validated by UNESCO - that strength in one’s native language (L1) paves the way to better assimilate other languages (L2, L3, L4, etc) (provided, of course, that immersion & instruction in L2, L3, L4, etc is of good quality) 

Especially useful for students facing difficulty with telugu/hindi.