The Addams Family Goes to School - S1-E1
Continuity mistake: After Mr. Hilliard goes through gate and nears the house, it's really at the real house. A second later, he's approaching the now-familiar front porch on the studio set. This is easy to tell because the layout of the two porches are radically different.
Chosen answer: Being that this was filmed in a TV studio, the set would have been specially designed and built to accommodate Cassidy's height. Also, I live in an older house (100 years-old), and all the inner and outer doors are eight feet tall.
raywest ★