This study described the features of writing instruction in widely used kindergarten English Language Arts programs and examined their alignment with evidence-based, best-practice guidelines. Three popular curricula were selected for analyses: Reading Wonders, Journeys, and Reading Street. Our coding of teacher manuals focused on instructional provisions for composing, spelling, and handwriting in key instructional sections within each curriculum: (1) genre writing, (2) grammar, and (3) reading instruction. Lessons for coding were sampled from the beginning, middle, and end of each program, comprising 12 weeks of instruction. Results indicated that, although variable across curricula, there were several features of writing instruction that aligned with evidence-based guidelines. All curricula included daily writing lessons and activities, along with provisions for teaching the writing process and basic writing skills (i.e., sentence construction, spelling, handwriting). However, instruction in basic writing skills were often isolated and support for these skills was rarely embedded within the context of children's own written compositions. In addition, children had relatively less opportunities to independently write their own compositions in genre writing compared to teacher modeling writing or using shared writing. Results of this study could inform efforts to revise or develop curricula to better facilitate the writing development of kindergartners.