ISAO was planned to be held in 2020 in Bolzano, Italy, but the pandemic broke these plans. Please see this page for the latest information. Next ISAO is now planned for 2023.
Last ISAO schools were held in
* 2018 – Cape Town, South Africa
* 2016 – Bozen-Bolzano, Italy
* 2014 – Vitoria, Brazil
* 2012 – Trento, Italy