Three judges rated each performance based on technical skill, stage presence,and "airness."

VOA: special.2009.08.14

C So, that's the breakdown. And, the grade is C level, 50% and it's based upon a performance of 50% absolute.

这些就是分类，分数是，那就是基于成绩的。

麻省理工公开课 - 固态化学导论课程节选

States that want to take part in the Race to the Top cannot have rules that bar performance-based pay for teachers.

VOA: special.2009.07.30

She negotiated a new labor contract that measures teacher success based in part on student performance.

VOA: special.2010.10.21

The group does this through the performance of personal stories based on real life experiences.

VOA: special.2009.03.27

Each year the Washington-based League of Conservation Voters releases a scorecard that rates the performance of members of Congress on environment and energy issues.

VOA: standard.2010.02.25