This movie probably won't be in the data base, it stars a 16 year old.
This gripping movie starred Garrett Backstrom as Herman, the story of a bullied High School sophomore who snaps one day and locks down his school's Gymnasium and kills 42 students, and teachers, and  one police officer. I had never seen this movie before, but Garrett looked very familiar! I think I've seen him in other movies at a younger age, but can't say for sure! He gave a sparkling performance! There were a couple of scenes in the movie that showed Herman at younger ages, At 8, played by Ryan Mossell. I won't reveal any more of the movie so I won't ruin it for those who haven't seen it yet. It's a great movie well worth a look!  It did have a scene that looked possibly like it might have been an actual Home Movie of Garrett at home when he was about 12, so, since this movie shows the main character at younger ages, 8, and 12, I think it qualifies for the Data Base!