More than six years ago, B Lab created its first set of performance standards with the guidance and thought-leadership of a third-party standards advisory council. Every two years since then, B Lab’s standards team revises the B Impact Assessment (BIA), filtering through the significant feedback that we’ve received from the users of our performance standards – now, more than 8,000 companies and nearly 100 investors -- with additional contributions coming from experts in impact measurement with deep sectoral experience.