When deploying Review Schema, how should the rating scale be set to meet search engine requirements?

When deploying the Review Schema, the setting of the rating scale must comply with the Schema.org specifications and the requirements of search engines for structured data parsing. It is generally recommended to adopt the standard range of 0-5 points. According to the definition of Schema.org, the "reviewRating" property of the Review Schema must clearly mark "minValue" (minimum value) and "maxValue" (maximum value). At present, mainstream search engines (such as Google and Baidu) generally recognize the 0-5 point rating system. In this case, minValue="0" and maxValue="5" should be set, and the actual rating ("ratingValue") must be within this range. Special scenarios: If the industry has specific rating habits (such as educational institutions commonly using 1-10 points, and hotel reviews using percentages), a custom range can be used, but it is necessary to ensure that minValue and maxValue are consistent with the rating logic displayed on the page (for example, when using 1-10 points, set minValue="1" and maxValue="10") to avoid data conflicts that prevent search engines from parsing correctly. Recommendation: When setting the rating range, priority should be given to 0-5 points to adapt to the parsing habits of most search engines; if a custom range is used, minValue and maxValue must be clearly defined in the Schema and consistent with the rating description displayed on the page to improve the readability of structured data.