Click on letter blocks to string together a word. Click on the last letter twice to enter the word. If the word is accepted the blocks will be removed and you will earn points. There are many special blocks that will result in various "power-ups." The most important power-up is the quiz power-up (the block with a question mark on it). When a quiz power-up reaches the bottom, you will get a quiz question. Answering the question correctly will increase your grade. An incorrect answer will decrease your grade. When you get an "A" you graduate to the next level. If you get an "F" you are expelled and you have to start over. Good luck and have fun!