I was a teenager when the PBS show aired, so I didn't pay much attention.
I only became a fan when the Muppet Show came around.
M y early childhood "educational" shows were Captain Kangaroo and Kukla, Fran and Ollie. I also remember Andy Griffith reruns early in the morning after Captain Kangaroo. But mostly cartoons. Mighty Mouse, Woody Woodpecker, Loony Tunes, Popeye, on real early in the morning. Also Tarzan movies, Lone Ranger, and the 3 Stooges in the afternoon. Hosted by Bozo the Clown, or Bennie Carl( a local kiddie show producer/character, seems every town had one.)