After October 2008 the channel decides to focus its programming only on teenagers, dropping the preschool and classic programming of the channel.

Every school district is required to make a plan for preschool programming, Dr. Fowler said.

That would mean promoting the channel as well as giving up any digital channels providing preschool programming that they might be operating locally without advertising.

That channel will no longer carry preschool programming.

The television networks are urged to offer at least one hour of preschool educational programming each week.

It was with dismay that I read the article on preschool programming for handicapped children.

Starting March 1, 2012, Nick Jr. airs promos for its preschool programming and short features, abandoning the commercial-free environment for kids that began with Noggin.

Ms. Weiss said: "I don't feel threatened by Nick moving into preschool programming because we have had such a successful track record with children.

Programming in the vein of live action and puppeted preschool programming also appeared during this time.

What other free television channel devotes five hours each weekday morning to preschool programming, providing a critical educational foundation for children of all economic circumtances?