Go right and click on the green file cabinet. Now, go down and turn the power on. Go a little to the right and you'll see the school bell's clapper hanging from above. Get it then go out again.
The clapper.
It it in the secret passage in the detention room on Big Nate Island.
you first have to find the clapper for the school bell so they will leave
The missing bell clapper on big nate island is in the secret room under the detention room turn on the light and go to your right and jump on the tool table and above you is the missing bell clapper just jump at it and it will go into your items.
get the bell clapper
You go down the rope, turn the power on, and find the bell clapper to put in the school bell.
The bell on Big Nate Island on poptropica is located on the top school building. To reach it when you have the clapper, you need to get rid of the seagull there. (see related question)
The missing bell clapper on big nate island is in the secret room under the detention room turn on the light and go to your right and jump on the tool table and above you is the missing bell clapper just jump at it and it will go into your items.
Turn on the light (by your feet) and jump to find the Bell Clapper hanging from the ceiling. Artur (a regular character in the Big Nate strip) is at the far right, if you want to talk to him.
The missing bell clapper is hanging from the ceiling.
If you have already got the bell clapper, you need to jump to the top of the school and find the bell. Then go to your inventory and click 'Use' on the bell clapper. It should ring and send the children in the playground back.
you go on top of the school and there no clapper so you sneak off with the egg