For chrcking the transcript: https://www.buzzsprout.com/2379282

By the book 

If someone does something “by the book,” it means they follow all the rules, policies, or procedures exactly—with no shortcuts or exceptions. 

Examples:

1- Our accountant is extremely careful—she does everything by the book, down to the last cent.

2- I tried to renew my passport early, but the clerk refused. He said, ‘Sorry, we have to do this by the book.