Revelio Pages in Hogwarts: Stuck at 147/150

[REENA]

I've been walking around and can't seem to figure this out. My map shows me that I've discovered everything, I'm at 150/150 (also collected anything else in Hogwarts, so there is nothing left for me to collect).

But when I check my collection, it only displays 147/150 revelio pages, showing me that I miss 3 pages in Hogwarts. Any ideas what it could be?

[=DeadShot=]

Originally posted by REENA:

Originally posted by =DeadShot=:

It is a side mission near the end of the main quest. Attend professor Bins history of magic class. And getting those pages are compulsotory.

Thank you.

Turned out that the last 3 pages were part of two different missions.

What missions? Can you tell? I know attend professor Bins history of magic but what else?

[REENA]

Originally posted by =DeadShot=:

Originally posted by REENA:

Thank you.

Turned out that the last 3 pages were part of two different missions.

What missions? Can you tell? I know attend professor Bins history of magic but what else?

Yes. I picked up one missing page in "Professor Weasley's Assignment".
Apparently you have to pick up two pages. One in the underground harbour and one in the library (you will stand right next to it while doing the quiz with Sophronia Franklin).

I wasn't able to get this page before, it was simply not visible.

The other two pages I got in "History of Magic Class" which you mentioned before.

[=DeadShot=]

Originally posted by REENA:

Originally posted by =DeadShot=:

What missions? Can you tell? I know attend professor Bins history of magic but what else?

Yes. I picked up one missing page in "Professor Weasley's Assignment".
Apparently you have to pick up two pages. One in the underground harbour and one in the library (you will stand right next to it while doing the quiz with Sophronia Franklin).

I wasn't able to get this page before, it was simply not visible.

The other two pages I got in "History of Magic Class" which you mentioned before.

Thanks.

[Excaliburber]

Quidditch Pitch,Caged Bathtub,Hogwarts Owls This are all outside of hogwarts so maybe thats why you havent seen them in any list but they are all counting towards the collection

[Nephai]

So I had 146/150 in my collections even after following videos and collecting all pages. I fixed it by comparing my collections list to this list, https://www.playstationtrophies.org/game/hogwarts-legacy/guide/all-revelio-pages-locations
Doing this I discovered four pages I missed in Hogsmeade that were not revealed in the videos I watched. I hope this helps!
ETA: My Field Guide Pages in Challenges was at 100% before I found these missing four pages.