Yukio HISAKI says that Shushi became a director after the establishment of what became a prototype of Daigakuryo (Bureau of Education) in about a little more than one year, from when he moved to Gamo District to the time of his investiture.
久木幸男は集斯が蒲生郡に移されてから、この時の叙任までの約1年余りのうちに日本の大学寮の原型が成立して、集斯がその長になったとする説を唱えている。