Obvious starcast: Shah Rukh Khan as the arts teacher (duh duh duh!!), Aryan Khan as the dyslexic child (even if he could not act for nuts), Rani Mukerjee as the kid’s mom (assuming Kajol is unavailable), Abhishek Bachchan as the kid’s dad, Amitabh Bachchan as the school principal (who cares if the role is ultra minute, he can afford it).
It would be shot in New York to appeal to the NRI audience.
The story line would obviously be different. SRK would fall for the dyslexic kid’s mom. The last scene would have the mom running to the teacher rather than the kid. And again, like in so many other movies, SRK would get someone else’s girl.