How is the score in the SEO section of Report Card calculated?

How is the score in the SEO section of Report Card calculated?

The score in the SEO section is calculated by the number of factors passed, divided by the total number of factors (for example, Title Tags & Headings is a factor).



We first calculate the percentage (%) and then map it to the corresponding letter grade.
Example: 
  1. Number of factors passed = 14
  2. Total number of factors checked = 17
  3. Calculation: 14/17 (divided by) x 100 = 82.36%
  4. In this example, the corresponding letter grade is a "B"