Grammar suggestions has been one of the best improvements to Google Docs in the last year. So far those suggestions have only been available in English. Yesterday, Google announced that Spanish grammar suggestions are going to be rolling out to Google Docs users over the next couple of weeks. Unfortunately, this feature will not be available to G Suite for Education users of Google Docs.
When English grammar suggestions for Google Docs was first announced, G Suite for Education users were excluded. That changed after a few months. Hopefully, the pattern will be the same with Spanish grammar suggestions.