| 2018-03 -- 2018-03 | English conversation training for selected Japanese high school students (Japan Earth Science Olympiad Committee) | Japan Earth Science Olympiad Committee |
| 2017-08 -- 2017-08 | Lecturer for selected Japanese high school students (Japan Earth Science Olympiad Committee) | Japan Earth Science Olympiad Committee |
| 2017-07 -- 2017-07 | English training and testing of the Int. Geography Olympiad representatives in Tokyo | Japan Committee International Geography Olympiad |
| 2016-07 -- 2016-07 | English training and testing of the Int. Geography Olympiad representatives in Tokyo | Japan Committee International Geography Olympiad |
| 2016-08 -- 2016-08 | Staff of the 10th International Earth Science Olympiad | Japan Earth Science Olympiad Committee |
| 2016-08 -- 2016-08 | Lecturer for selected Japanese high school students (Japan Earth Science Olympiad Committee) | Japan Earth Science Olympiad Committee |
| 2015-08 -- 2015-08 | Lecturer for selected Japanese high school students (Japan Earth Science Olympiad Committee) | Japan Earth Science Olympiad Committee |
| 2017-03 -- 2017-03 | English conversation training for selected Japanese high school students (Japan Earth Science Olympiad Committee) | Japan Earth Science Olympiad Committee |
| 2016-03 -- 2016-03 | English training and testing of the Int. Geography Olympiad representatives | Japan Committee International Geography Olympiad |
| 2016-03 -- 2016-03 | English conversation training for selected Japanese high school students (Japan Earth Science Olympiad Committee) | Japan Earth Science Olympiad Committee |
| more... |