I watched Fantastic Studios Inc. over Los Angeles TV in the early 1950s. (My family got our first TV set in August, 1950.) Since I have not seen this show in nearly 6 decades, my memories are a bit faint. As I recall, there was a regular cast of youngsters who got into all sorts of adventures. I do remember one episode in which the kids had to deal with a forest fire.
Again, it's pretty difficult to give an intelligent review of the program after so many years, but I do think I am safe in saying that it was probably as good as many contemporary kids shows. Today's shows have better production values, of course, but not necessarily better stories.