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CORRECTION: In yesterday's Business section, The Sun incorrectly reported that Keith Leffler, a professor of economics at the University of Washington, represented Microsoft Corp. when he testified at a federal court hearing on a proposed settlement of a class action suit against the software maker. Leffler testified for the plaintiffs in favor of the proposed settlement. The Sun regrets the error.

Leffler, the economics professor, detailed the values of various parts of the proposed $1.6 billion settlement. He said the software Microsoft would donate is valued at $839.5 million. The computer- refurbishing the company would provide is valued at $169 million and the training is valued at $90 million. Microsoft also would give schools $16.8 million in subscriptions to its technical support program, TechNet.

[Jeffery K. Mackie-Mason] said the settlement is worth $700,000, not the $1.6 billion figure that Leffler and Microsoft had said it is worth. Free software assumes schools would have the budgets to add other necessities to go with it, such as computer rooms and teacher training, Mackie-Mason said.