I used to run when I was in the middle school.

我在中学的时候常常跑步。

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Therefore, to improve middle school after-school sports training run for the state to train more excellent reserve athletic talents, combined with his actual work, I chose this research topic.

因此为了搞好民办中学课余体育训练工作，为国家培养更多的优秀体育后备人才，结合自己的工作实际，本人选择了本课题的研究。

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Zhujiang Middle School is a civilian-run junior middle school founded by Guangzhou No. 6 High school-a national-level model high school in Guangdong province.

广州市海珠区六中珠江中学是由广东省国家级示范性高中、广州市重点中学——广州市第六中学，于2001年创办的一所国有民办初级中学。

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On Sunday the state-run China News Agency said a middle school in the nearby town of Baoxing had been heavily damaged.

WSJ: After China Quake, Efforts Turn to Recovery

There is also increasing evidence that interventions can produce middle-to longer-run effects on school achievement, special education placement, grade retention, disruptive behavior and delinquency and high school graduation.

UNESCO: II Part Analytic Section