KOIZUMI Rie
- Academic societies
1999-10 -- (current) Kantokoshinetsu Association of Teachers of English, KATE 1999-04 -- 2020-03 The Tsukuba Society of English Language Teaching 1999-09 -- (current) The Japan Language Testing Association (JLTA)
| 1999-10 -- (current) | Kantokoshinetsu Association of Teachers of English, KATE |
| 1999-04 -- 2020-03 | The Tsukuba Society of English Language Teaching |
| 1999-09 -- (current) | The Japan Language Testing Association (JLTA) |