The entrance to the secret room under the detention room is in the filing cabinet.
The stink bomb is used to get the teacher to leave the Detention Room. When you have the blueprint to the secret room (from Nate's locker), use the gum to get detention, then run the teacher off with the stink bomb so you can get to the file cabinet and then the secret room below. (see related question)
The 2nd Poptropica island was Shark Tooth Island (2007). See the related question below.
The 20th Island in Poptropica was Shrink Ray island, released in July, 2011. (see the related question below)
There are at least 3.Down below Main Street in Early Poptropica, there is one in the Spider Room.On Astro Knights Island, the secret society contact on the second floor of the Mill will give you the Cosmic Symbols card if you have the Secret Message.On Reality TV Island, one of the contestants is "Sickly Skull" (part Goth).
The "cowboy island" is Wild West Island, the 17th island in Poptropica. (March, 2011) For a solution see the related questions below.
The first island (one of the first three) is Early Poptropica from 2007. (see the related question below)
Astro Knights Island. (formerly Astroland :-) For e-mail updates from Poptropica, go to the related link below.
(see the related link below)
This may be a reference to Zeus, who you battle twice on Poptropica (Mythology Island and Super Villains Island). See the related questions below.
The island name is "Red Dragon island." (see the related question below)
The easiest island to complete is Early Poptropica.See the related question below for the guide.
At the end of 2013 there were 35 islands. For links to the individual island solutions, type "how do you beat ___ island on Poptropica" or see the related questions at the link below.