Skipping Sixth

"Skipping Sixth" is one of Samantha Greenbriar and Lonnie DeSoto's notes to each other.

Transcript
[Lonnie's writing is bolded.]

''LONNIE!! Holy crap I was in the library and I noticed something in the corner and I found a SECRET PASSAGE and it had Oscar's creepy old stuff in it????''

[A hand-drawn map depicting the secret passage connecting the library to the upstairs]

'Oh my god. I have got to see this. We're skipping 6th.'

Location
The note is found in a folder on the table in the sewing room.