The 30/70 Rule or the 70/30 Rule

By Betsy Hill and Roger Stark   Editor’s Note: This is part one of a two-part series.   Businesses often refer to the 80/20 rule.  When they do, it is in this context: 80 percent of our sales come from 20 percent of our customers. Or 20 percent of our customers account for 80 percent of our customer service issues. Almost any organization can probably come up with an 80/20 rule.   In education, we have been struck by a similar pattern and are starting to think that there may be a 70/30 rule in operation. Here are some proportions […]

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