Laughing and giggling throughout most of the story, the students weren’t just engaged—they were also amused.

How can I fix that sentence? Or is it ok?

It is terrible.

Laughing and giggling ...., the students were both engaged and amused.

Way to be blunt :-P.. Thanks for your help though.

The sentence "Laughing and giggling throughout most of the story, the students weren’t just engaged—they were also amused" is grammatically correct and conveys the intended meaning. However, if you want to improve the clarity and flow of the sentence, you could consider making a slight revision:

"The students, who were laughing and giggling throughout most of the story, were not only engaged but also amused."

This revision provides a clear subject-verb relationship and adds a modifier ("who were laughing and giggling throughout most of the story") to specifically describe the students. It maintains the original meaning while enhancing the sentence structure.