6 sentences

1. 这是他初中的毕业照。

   zhè shì tā chū​zhōng de bì​yè​zhào.

   This is his middle school graduation photo.

   Source: OpenSubtitles

2. 他在一所初中当老师。

   tā zài yī suǒ chū​zhōng dāng lǎo​shī.

   He is a teacher at a junior high school.

   Source: Dong Chinese Dictionary

3. 他初中毕业后考上了一所中专。

   tā chū​zhōng bì​yè hòu kǎo​shàng le yī suǒ zhōng​zhuān.

   After graduating from junior high school, he was admitted to a vocational secondary school.

   Source: Dong Chinese Dictionary

4. 他是不是对初中生活的第一天充满期待？

   tā shì bù shì duì chū​zhōng shēng​huó de dì​yī tiān chōng​mǎn qī​dài?

   Is he looking forward to his first day of middle school?

   Source: OpenSubtitles

5. 这孩子以前很顽皮，到了初中好像突然开窍了。

   zhèi hái​zi yǐ​qián hěn wán​pí, dào le chū​zhōng hǎo​xiàng tū​rán kāi​qiào le.

   The child used to be very naughty, but he seemed to suddenly wise up in junior high.

   Source: Dong Chinese Dictionary

6. 许多国家在初中阶段就开始对学生进行教育分流。

   xǔ​duō guó​jiā zài chū​zhōng jiē​duàn jiù kāi​shǐ duì xué​sheng jìn​xíng jiào​yù fēn​liú.

   Many countries begin tracking students into different educational paths as early as junior high school.

   Source: Dong Chinese Dictionary