Is it really necessary to add schema?

[mediadrug]

Schema is a type of microdata that makes it easier for search engines to parse and interpret the information on your web pages more effectively so they can serve relevant results to users based on search queries.

The OP hasn't asked for the definition!!!!

And yeah I think you should add it. Now webmasters are doing every possible technical aspects to get ahead in the SERP's like adding https to sites and this.