Unintentional Period Piece: Good God. The intro alone could easily date the series to the 90s and that isn't even getting into the the characters clothes, the style of the house, and Clarissa's old 90-something era computer.
What Could Have Been: In 1995, a spin-off called Clarissa Now was pitched to CBS. It would have shown Clarissa as a college student in New York, working as an intern for a newspaper.
Interestingly, that was almost the exact same career path that Melissa Joan Hart's next character, Sabrina, did follow after high school. This has led to more than a few people joking that they didn't know it was two separate shows, and just assumed that Clarissa woke up and discovered she was a witch.