The Global Education Foundation is offering scholarships to go towards all or part of the IB exam fees (for Article 1 schools only in 2016), and in some cases, computers and graphing calculators, for students in IB World Schools.

More information (in Japanese):
http://www.sekaideikiru.com/#!about/c1uzq

The GEF website also includes information about the IB in Japanese.

Global Education Foundation Offers Scholarships to Help Students Enter IB Schools