3 sentences

1. 老师明天下午要召开家长会。

   lǎo​shī míng​tiān xià​wǔ yào zhào​kāi jiā​zhǎng​huì.

   The teacher is going to hold a parent-teacher meeting tomorrow afternoon.

   Source: Dong Chinese Dictionary

2. 学校通知各位家长准时参加明天的家长会。

   xué​xiào tōng​zhī gè​wèi jiā​zhǎng zhǔn​shí cān​jiā míng​tiān de jiā​zhǎng​huì.

   The school has notified all parents to attend the parent-teacher meeting on time tomorrow.

   Source: Dong Chinese Dictionary

3. 家长会向学校提议改善食堂伙食。

   jiā​zhǎng​huì xiàng xué​xiào tí​yì gǎi​shàn shí​táng huǒ​shí.

   The parent-teacher association proposed to the school that the cafeteria food be improved.

   Source: Dong Chinese Dictionary