The only thing in the "secret room" under the detention room is the missing School Bell Clapper, which can repair the bell once you have scared off the seagull.
The lockers on Big Nate Island have combination locks. Nate's is written on the comic pieces.
The key fits the jet ski, so you can race Nate out to the seal island to the right of the lighthouse (you can see it through the telescope). The map to the time capsule location is there. (see related question)
the key is in the basement
keep trying
i belive it is a key or locker key
The secret key is in the Pokemon mansion (Cinnabar Island) in the basement.
It's located in the basement of the mansion.
The secret key is hidden in the basement of Pokemon Mansion which is located on Cinnibar Island.
The key is hidden in the basement of Pokemon Mansion which is located on Cinnibar Island.
its in the mewtwo mansion in the basement
Spitsy the lost dog is wandering on the Playground on Big Nate island. He is the key to recovering the Time Capsule because he will dig holes to save any treats he gets. Once the girls are off the playground, and you have the map from under the seal island rock, you can use the peanut-butter crackers to encourage Spitsy to dig up the Time Capsule. (see related questions)
You have to get thescuba gear from the picture guy. Then you go to the light house and dive into the water. Get the crab trap and the light house keeper will give you a lobster and the keys.