我打算先在国内读高中，然后再申请出国。

Wǒ dǎsuàn xiān zài guónèi dú gāozhōng, ránhòu zài shēnqǐng chūguó.

I plan to attend high school in my own country first, and then apply to go abroad.

他是我们高中的英语老师。

Tā shì wǒmen gāozhōng de Yīngyǔ lǎoshī.

He is the English teacher at our high school.

很多学生觉得，高中的压力比初中大得多。

Hěn duō xuéshēng juéde, gāozhōng de yālì bǐ chūzhōng dà de duō.

Many students feel that the pressure in high school is much greater than in middle school.