Play School is an Australian Logie Hall of Fame-winning educational television show for children produced by the Australian Broadcasting Corporation. It is the longest-running children's show in Australia, and the second-longest-running children's show worldwide. An estimated 80% of pre-school children under six watch the programme at least once a week. It is screened four times each weekday on ABC Kids, at 6.00 am, 9.30 am, 12.30 pm and 3.30 pm (from 7 July 2014) and twice daily each weekend at 9.30 am and 3.30 pm. The program celebrated 50 years of broadcasting in 2016. Many of the presenters remained with the series for lengthy periods, including Don Spencer (31 years), Benita Collings (30 years), John Hamblin (29 years), Alister Smart, (27 years), Noni Hazlehurst (23 years), John Waters (19 years) and Jan Kingsbury (15 years). Presenters are all trained actors or musicians rather than preschool education experts.