Todd Lookinland, who plays Matt, is the real-life younger brother of series regular Mike Lookinland (who plays Bobby Brady).
This was a pilot for a series that did not sell.
Actors Ken Berry and Jackie Joseph (who played Miss Phillips at the Adoption Home) were married in real life from 1960-1976. In real life, they adopted three children.
When Matt (Todd Lookinland) is brushing his teeth in the bathroom, you can see a roll of blue toilet paper hanging on the wall. You can also catch a glimpse of a toilet tank behind Matt. This is the one and only time during the series that a toilet is shown.
This appears to be the first time that special guest stars were introduced in beginning of the show - an obvious plug for the proposed stars of the pilot.