While it does contain elements of fantasy, like magical creatures and a hidden world, it's rooted in fantasy rather than science fiction.
Here's why:
* Science Fiction typically deals with futuristic technology, space travel, or other advanced scientific concepts.
* Fantasy focuses on magic, mythical creatures, and often draws inspiration from folklore and mythology.
"Beyond the Spiderwick Chronicles" features fairies, goblins, and other creatures from mythology, emphasizing magical abilities and a realm hidden from ordinary sight. These elements are more characteristic of fantasy than science fiction.