Sample Rating Schema

rating-schema-markup

<div itemscope itemtype="http://schema.org/Thing">
  <h2 itemprop="name"> Super Book </h2>
  <div itemprop="description">Ultra interesting. Super impressive.</div>
  <div itemprop="aggregateRating" itemscope itemtype="http://schema.org/AggregateRating">
    <div>Book rating:
      <span itemprop="ratingValue">9</span>
      <meta itemprop="bestRating" content="10"/>
      <meta itemprop="worstRating" content="1"/>
      based on <span itemprop="ratingCount">20</span> ratings
    </div>
  </div>
</div>