A SCIWEBS web site is rated in the following way:
For each criterium, a numerical score is assigned to "Good", "Fair", or "Poor". This table is an example for Load Time.
Criterium (Load Time) |
Good | Fair | Poor |
| Points | 3 | 2 | 1 |
There are 15 rated criteria used in SCIWEBS (the three "Appropriate for K-3 ...etc are omitted because they are specific to a group of individuals). Therefore a site that receives a perfect score would receive 45 points, while another site that recieved 2 "Fairs" and 13 "Goods" would have a total of 39 points.
The points for a web site are then converted to a percentage score, which is then converted to a Earth Score using the following percentage intervals.
Six spheres, 100-89%
Five spheres, 88-80%
Four spheres, 79-68%
Three spheres, 67-56%
Two spheres, 55-44%
One sphere, 43% and below
The rating can be calculated using a spread sheet. An example spread sheet is available on the following ftp site. Click pointer on button to bring the SCIWEBS rating spreadsheet [MS Excel, 1997) to your hard drive; then strike the return key if a prompt asks for a password (password not required)]: