Overhead 3: Instructions for Using the FOG Index

1. Count off a 100-word sample.
   
   
2. Count the number of complete sentences in the sample. ___________
   
   
3. Count the total number of words in the complete sentences. ___________
   
   
4. Find the average sentence length (#3 divided by #2). ___________
   
   
5. Count the number of words of three or more
   syllables in the entire 100-word passage. ________________
   
   
6. Add the answers to #4 (average number of words
   per sentence) and #5 (long words). ______________
   
   
7. Multiply your answer to #6 by the constant .4(4/10) to get
   your approximate grade-in-school reading level. _______________