Why is my Handicap Index not changing?

I posted scores why is my Handicap Index not updating?

You may have posted a few scores recently and expected your Handicap Index to move up or down. If it hasn't, there may be an easy answer why. 

Every time you post a score, your Index doesn't necessarily change. This is because The system doesn't use every score when calculating your Handicap Index. The calculation takes into account your 20 most recent scores, and of those 20, the best 8 scores (lowest  Score differentials) are used to determine your Index.  

If you are curious about which scores in your most recent 20 are being used to calculate your index, look for the ones with a star next to the list of scores in your GHIN app or on ghin.com.  Also please remember that your Handicap Index updates every night around midnight.