The w3school.com has a lot of broken codes. When I validator the code it has most of the errors in the input. The Java page is also broken with alot of errors. There are about 40 warning and errors on the Java page, and 43 warning and errors on there homepage. Other than source code having alot of errors, I would rate this site 8.50 out 10. Lot of great aesthetics and user friendly. They made it super simple for 10th grade level coder.