JOI, Junior Optimist International JOI club name: Portage Central High School Rise and Shine Junior Optimist Club. Chartered: Sunday, November 27, 2019. Sponsor: Breakfast Optimist Club of Kalamazoo, BOCK. BOCK members who advocated for and oversaw the creation of the JOI club: Dan and Theresa Mills. Number of JOI members: Initially 13, as of October 2020 there are 30. The Start Get-togethers before and during COVID-19 Spreading Optimism