The school visited by Mister Rogers is the McKee Elementary School in Oakdale, PA.
Instead of the usual living room opening part (with the flashing yellow light), We see an outside of the house with Fred Rogers entering the home through the porch. This is the first episode to do this.
From this point on, Fred Rogers would use a betamax cassette tape onto the picture-picture instead of a film (which he used in previous episodes).