The Parkland kids are actors as proven by a movie they all made together in June 2017. A movie clip featuring over 5 of the media rolled out teens features a character that also looks, strangely like Nikolas Cruz.
More info here: (Now Playing on Dtube) Inverted Reality - Media Rolled-Out Main Child Actors From Parkland School Shooting Event Made Foreboding Movie Trailer In June 2017