"Flesch-Kincaid Reading Ease 83.2"
This is quite a high score! It ranges from 0 to 100. This usually means that around 55 is considered an okay-score. Anything under 55 would be a failed mark.
"Gunning-Fog Score 6.7
Coleman-Liau Index 7.8
SMOG Index 5.1
Automated Readability Index 2.2
Average Grade Level 5.2"
All these scores are related to the readability of the text.
Like it mentioned, a score of 10-12 is roughly the reading level on completion of high school.
However, a general text that should be readable by most people would be around level 8.
You can consider level 6 to 8 quite decent, when it comes to readability.
Your average score is 5.9. (I left out the Automated Readability Index, since it so much lower than your averages scores, I believe the calculation does not work on your particular test.)
Since this is based on calculations and averages, I personally wouldn't consider this a good system to check your readability. Let someone else read your text, here on iTalki or anywhere really. ^^
Good luck with learning!