To avoid cluttering of the Lesson Transcript, all transcripts related to finding Secret Notes can be found here.
The only transcripts not present are if they're involved in a sub-plot, such as Val's Willing Submission. You find those under their respective transcripts.
If you're not very interested in this, you might have better luck in the List of Transcripts.
Ms. Rack's Secret Notes
Note One
Note Two
Normal Molly
Molly: I think we're finally getting out of the slime's territory.
Protagonist: Don't let your guard down, the monsters here are probably stronger.
Molly: I don't mind stronger monsters if they are cleaner...
Protagonist: Cleaner?
Molly: Do you know how hard it is to get the slime out of all the folds in my kimono?
Protagonist: I never really thought about it...
Molly: N-Not that I mind helping you! I just don't want to bother anyone by going into class smelling like a slime.
Protagonist: You could always wear something easier to clean.
Molly: I-I guess so... But...
Protagonist: Oh, what's this over here?
Molly: Is it a note?
Protagonist: Looks like it. This one says to go to Ms. Rack's class next.
Molly: Congratulations! I guess we should get back so you can go to it.
Dr. Tiff's Secret Notes
Note One
Note Two
Normal Cassandra
Cassandra: Well, isn't this place unsettling.
Protagonist: What makes you say that?
Cassandra: I like my monsters... less fuckable.
Protagonist: I guess those flowers were odd. You found them attractive?
Cassandra: Wouldn't you like to think that.
Protagonist: I will unless you say otherwise.
Cassandra: Go right on ahead. At least I'll know you're fantasizing about me.
Protagonist: What?
Cassandra: Well, that's what you're doing if you're thinking about kind of things I'd fuck.
Protagonist: Well, if I have your permission...
Cassandra: Whatever. I'm sure you think of me all- Huh...? Hey, there's a note!
Protagonist: Really? Well, I guess you get off easy this time. Which class is it this time?
Cassandra: Looks like Dr. Tiff. I found this one, so you better bring me along!
Drape's Secret Notes
Note One
Cursed Val
Val: Looks like it's a bit quieter here. It's a bit eerie.
Protagonist: You're right. I wonder if there is a reason for it. Let's look around.
Val: Sure, let's take a look.
Protagonist: Just try to be careful. There could still be a few monsters..
Val: Thanks, but try not to worry about me too much.
Protagonist: Hm... It looks like there is a note here.
Val: Oh, good job! What does it say?
Protagonist: It looks like... Mr. Drape's class is next...
Val: Oh! That's my favorite class! We should hurry so we're not late!
Protagonist: I guess I don't have much choice...