Language and Study
Inter-University Center for Japanese Language Studies [+ + +]
http://www.stanford.edu/dept/IUC/
Japanese Language Program for Specialists (in Cultural and Academic Field)
http://www.jfkc.jp/en/introduction/facility.html
Kyoto Consortium of Japanese Studies
(advanced Japanese and Classical Japanese)
http://kcjssummer.columbia.edu/
Harvard Summer School in Kyoto at Doshisha University
http://www.summer.harvard.edu/programs/study-abroad/kyoto-japan
Hiroshima and Peace
http://www.hiroshima-cu.ac.jp/Hiroshima-and-Peace/index.htm
Hokkaido International Foundation Japanese Language and Culture Program
http://www.hif.or.jp/en/program/
CET summer and year intensive language program in Osaka
http://cetacademicprograms.com/programs/japanese-language-osaka-japan/
Intensive Kanbun Course at the IUC
http://www.stanford.edu/dept/IUC/summer.html
Intrax Internships Abroad [undergrad]
https://www.intraxinternshipsabroad.com/
Japan-America Student Conference
http://iscdc.org/jasc/
Japanese Language Courses through JF Los Angeles [public]
http://www.jflalc.org/courses.html
JET Memorial Invitation Program [high school]
http://www.jflalc.org/jle-jet-mip.html
Summer Intensive Language Program (SILP)
http://www.miis.edu/academics/language/summer
Theatre
Kyoto Art Center: Traditional Theatre Training
http://en.kac.or.jp/category/46
Noh Training Project UK
http://www.reading.ac.uk/ftt/research/ftt-NohTrainingProject.aspx
Translation
SOAS Translation Workshop in Japanese Studies
http://www.soas.ac.uk/history/conferences/previous/japantranslationworkshop/
Western Michigan Summer Translation Institute
http://www.wmich.edu/languages/summertranslation/index.html
Cultural Exchange
High School Diplomats
http://www.highschooldiplomats.com/
Misc
Reischauer Scholars Program [high school]
http://epgy.stanford.edu/courses/spice/index.html