The purpose of this paper is to comprehend the importance that grammar has in the teaching of writing in the Hispanic American countries and Spain. To achieve this, the discussion that has taken place in these countries about the importance of sentence grammar in the teaching of writing is analysed. Three proposals for the contextualised teaching of grammar are systematised from the literature review: those that are focused in the writing process, those focused on metalinguistic reflection and those with a greater emphasis in the grammar of text. Besides, the school curricula of 14 Spanish-speaking countries that were involved in the international assessment of TERCE are examined. This analysis shows an evident attachment to the communicative approach of grammar. This means that in almost all countries grammar is taught linked to the linguistic skills of reading, writing or orality, with an especial emphasis in writing. Also, two tendencies can be observed in the curricula of this countries, that guide the way in which curricula use sentence grammar to have an impact on written communication: (i) from sentence grammar to text grammar and (ii) from text grammar to sentence grammar.