What he did was: After an initial trail period of mixed classes, he changed the school policy.

他所做的是：经过一段混合班的试运行期后，他改变了学校的政策。

youdao

Future strategies could focus on changing food pricing policy, influencing school policy on health matters and physical education, and changing the content of school canteens.

未来的策略应该集中于改变食品定价政策，影响有关健康内容和体育教育的学校政策，并改善学校小卖部的商品。

youdao

Each school sets its own admissions policy.

每所学校都设立自己的入学政策。

《柯林斯英汉双解大词典》

Betsey Stevenson is a business and public policy researcher at the Wharton School of the University of Pennsylvania.

VOA: special.2010.03.04

Nolan Bowie I'm Nolan Bowie. I'm a senior fellow Adjunct Lecturer in Public Policy at the Kennedy School of Government, Harvard University.

我是,我是哈佛大学，肯尼迪政府学院公共关系的特邀高级讲师。

麻省理工公开课 - 媒体、教育、市场课程节选

But,the focus turned on Hayward, says economic and environmental policy expert Robert Faulkner of the London School of Economics.

VOA: standard.2010.07.27

Everyone has to say a few lines because school policy demands equal opportunities for all.

CNN: ASIANOW - TIME Asia

Mr. Walcott regularly holds town halls and attends school policy panel meetings.

WSJ: Parents Seen Less Involved in Schools

He said the relationship wasn't specifically against school policy, but the rules require someone in a supervisory role to report such a relationship.

CNN: STORY HIGHLIGHTS