Severnvale - Private English school UK
LSI - International school chain - 40 centres
British Council, Hong Kong - one of 100 centres
Wall Street Institute, Bangkok - large commercial chain 400 centres
Rosetta Stone - famous software and now online social learning
Livemocha.com/Active English - biggest online social language learning network (5m users)
Best published time to improve 3 levels (hours)
Prices not published but 3 levels cost $1642 in Bangkok in 2005
Before/After audio/ video proof