Flesch reading score is a method of calculating readability of any given text.

The basic principles of good reading is>

1. Using Short sentences is good.
2. It is advisable to limit the number of words in each sentences to upto 14 words.
3. Using active voice rather than passive
4. Using simple words

A high score means that the text is not easy to read.

$206.835 - 1.015 \left ( \frac{\mbox{total words}}{\mbox{total sentences}} \right ) - 84.6 \left ( \frac{\mbox{total syllables}}{\mbox{total words}} \right )$[7]
Scores can be interpreted as shown in the table below.
ScoreNotes
90.0–100.0easily understood by an average 11-year-old student
60.0–70.0easily understood by 13- to 15-year-old students