在中文中，"开学啦"可以直接翻译为"school is starting"或"school has started"。

这个短语来自于中文，是一个表示开学的意思的常用语。

下面是一些例句：

开学啦，我们要好好学习了。(School has started, we need to study hard.)

明天就是开学啦，你准备好了吗？(Tomorrow is the first day of school, are you ready?)

开学啦，让我们一起努力迎接新的挑战吧！(School has started, let's work hard and face new challenges together!)

在英语中，开学的时候通常会说"school is back in session"或"the new school year has begun"来表达开学的意思。

下面是一些例句：

School is back in session, let's work hard and make this a great year.

The new school year has begun, I'm excited to see what it brings.

It's the first day of school, let's make sure we're organized and ready to learn.