There was a movie trailer I saw coming out (either in 2014 or 2015) about a teacher who helps an Autistic mathematician. What is the movie?

Update: The boy had apparently lost his father, and the teacher was helping him build up courage through his confidence in math- meanwhile the teacher starts falling in love with the boy's mother, and the boy has his own crush. I just need help with the title of the movie. Thank you
1 answer 1