While not the Internationale Baccalaureate diploma standard, but great nevertheless, here's the high school chem A.P. online for free ...
Preparing for the AP* Chemistry Exam - Part 2
... and forty other FREE high school courses at edX ...
... perhaps alluded to in the last paragraph of this article about John Palfrey bringing Phillips Academy Andover into the Digital Age in Massachusetts as head of Andover - http://www.townandcountrymag.
com/society/tradition/news/ a3371/class-rebel/ - and especially herein a recent blog post:
Golden Toad: Chemistry Prof at Andover moves entire curriculum online so everyone can prepare for Chem AP !:) … (Translatable, too?), John Palfrey bringing Andover into the Information Age, World University in conversation with Google for our upcoming jobs this autumn: "These are the 4 attributes that ... ", World University and School's Academic intern position first 3 JOB listings in Reed College's Simplicity are now public (for Reed students who have been awarded FWS this autumn)
How might these courses adapt to the IB and translate into many languages ... and at World University ?
See too -
WUaS_International_Baccalaureate_Diploma_and_Programme at World University -
Chemistry at WUaS -
and especially MIT OpenCourseWare-centrically, for example -