Did you get it right?
Compare panels A and B around the pennant, classroom door, paper chain, lockers, and lunchbox.

The Answer
The correct answer is: There are five visible changes in the school hallway..
Here is why
- The pennant letter changes from S in A to C in B.
- The classroom door changes from 12 to 17.
- A paper-chain link near the upper left changes from red to blue.
- A yellow planet emblem appears on the lunchbox in B.
- The lunchbox’s upper-left latch becomes a more prominent yellow clasp in B.
Why people miss it
The long hallway pulls the eye into the distance, while two of the changes sit close together on the small lunchbox.
What answer did you get before checking?