In 2018, Class 4A was downstairs. In 2019, it is upstairs between a Multi-room and Class 4B.

If you are at the hall and you want to go to 5th grade A:

First, go into the building.

Then, turn right and go upstairs.

Next, turn right and go till the end of the corridor.

Class 5A is on the left.

Finally, remember to knock the door if you have to go in!