Voice Forge - Text to Speech

http://www.voiceforge.com/demo

Try out several voices, say various things, find how long of a sentence / paragraph you can say for free on this site.

http://translate.google.com/# - Try using the different languages and translate something in that voice's language to speak in that language. (preferably something you might recognize or understand).

DO NOT TYPE PROFANITY, obviously you are at school and the code of conduct will still apply even if you type it instead of speak it.

Then after several minutes of understanding how this text to speech voices work, try out this.
http://www.sitepal.com/howitworks_B/

Create your own with the picture of you from picture day, or if you do not want to you can create one from a teacher.