You can read the conversations your students have had with tutors and with lessons. This is on by default in every organisation.
Tutor chats
Open the classroom from the sidebar, go to the Tutors tab and click the tutor. From there you can open a student's conversation.
Spotting replies students disliked
When a student gives a tutor reply a thumbs down, you can see it in three places:
On Student activity, their row has an amber thumbs-down badge. Hover it for the count, such as Downvoted 2 responses.
In their list of chats, a chat that contains a downvoted reply has a thumbs-down icon (Includes a response the student downvoted).
In the conversation, the reply is highlighted in amber with a thumbs-down beside it. Hover it to read Downvoted: The student marked this as a poor response.
Lesson chats
Open the classroom, go to Assignments, click the assignment and then the lesson. On the Students tab, click the chat icon beside a student to read their conversation with the lesson's tutor. If the student gave a tutor reply a thumbs down, that icon turns amber and carries a small thumbs-down badge.
If your organisation has private student chats switched on, transcripts are hidden unless the classroom is a research classroom and the student has consented.