old scary movie I cant remember the name

[Crystal]

Ok, I have been trying to remember the name of this movie I saw when I was little.  All I remember is that a school bus carrying some children drove through some kind of fog.  All the children on the bus turned evil, their fingernails turned black too.  The only way you could stop them was to kill them.  If you cut their hands off their fingernails turned back to a normal color.  Thats all I remember.  I have been trying to figure this out for like 15 years.  Its really starting to bother me that no one remembers this movie except my mother.  

I was taking a scary movie quiz and I think that one of the questions was about this movie.  They didnt give the name but in the answer they gave the name of one of the actors.  Kim Director.  I looked her up on the internet and it only lists her credits back to 1993.  I know that the movie is older than that.

[Trevor]

I think that film is "The Children" if I'm not mistaken.

www.imdb.com/title/tt0080527

[Terf]

Sounds about right. Here's Andrew's review: http://www.badmovies.org/movies/thechildren/

[M.10rda]

It is THE CHILDREN (1980) - this has been solved at least two other times...