Pay It Forward (2000)

Young Trevor McKinney, troubled by his mother's alcoholism and fears of his abusive but absent father, is caught up by an intriguing assignment from his new social studies teacher, Mr. Simonet. The assignment: think of something to change the world and put it into action. Trevor conjures the notion of paying a favor not back, but forward--repaying good deeds not with payback, but with new good deeds done to three new people. Trevor's efforts to make good on his idea bring a revolution not only in the lives of himself, his mother and his physically and emotionally scarred teacher, but in those of an ever-widening circle of people completely unknown to him....
A touching film in these uncertain times
A film of surprising majesty mainly because of its sincerity to convey the tale of a young (American) high school student, touchingly and masterfully played by the then 12-year-old Haley Joel Osment, who, at the instigation of his new teacher's challenge to the class, comes up with a beautiful and simple plan to make a difference in the world, involving doing a good turn to not just one person but three, who then, in turn, return the gift themselves to three more people, thereby very quickly spreading goodness in both directions, in the giving and receiving, in the most unlikely places and ways. Warning: a tear-jerker!