The current international Baháʼí teaching plan is a 5-year period from April 2016 to April 2021, with a goal to bring the number of clusters (a Baháʼí administrative grouping about the size of a US county) with an advanced level of activity to 5,000 globally. On 30 April 2018, the Universal House of Justice announced that the current plan will be followed by a one-year plan, which will include a special gathering at the Bahá’í World Centre for the centenary of the passing of ‘Abdu’l-Bahá, as well as another gathering marking the centenary of the first public reading of his will. Those gatherings, they said, would be followed by a worldwide series of conferences, and another multi-year plan. Another letter of 25 November 2020 confirmed the coming one-year plan, the conferences tentatively going forward, and that 2022 will be the start of a nine-year plan.