You Hide Behind Things Until You Get To The Mirror And Then Reflect The Shrink Ray Gun On The Mirror
I have a couple of things to say to this. 1)shrink Mr silva? what drugs are you on! 2)shrink ray? sounds like something from "honey i shrunk the kids!" 3) Look in the atlas and you might find that 'shrink ray island' is clearly not there.
the code is thief is mr silva
flush the thumb drive thief is mr silva
the second code is THIEF IS MR SILVA
When you have driven the toy truck to the Science Room and escaped Mr. Silva and the shrink ray, he is shrunken and you can get back to your normal size. You will automatically appear at the Science Fair, where the tiny Silva is an exhibit and CJ has won the fair. You receive the island Medallion. For a full solution, see the related questions.
The second message you get from CJ is that Mr. Silva (the science teacher) is the one who stole her shrink ray invention, and (being in the science lab) she is in danger.
Drive the car/ toy along the pavement. when you get there you will automatically drive up a ramp into Mr Silva's office. There you will see CJ and you must work out a way to shrink Mr Silva before he shrinks you.
Mr Silva
you go behind items until you get to the mirror then mr silva will shrink himself
They don't mention any principal. The science teacher's name is Mr. Silva.
Hide behind objects so he cant get you and then you meet cj on his desk
To finish Shrink Ray island, drive the toy truck to the school and avoid the Shrink Ray attack by Mr. Silva. Jump from the desk to the lab bench using the globe. Use the mirror to reflect the beam back on Silva, and you can restore yourself and CJ to normal size. (see the related questions for the complete solution)