Learning to write involves the acquisition of several skills, not the least of which is handwriting. Indeed, studies in cognitive psychology have clearly demonstrated that it takes time to acquire this complex skill. The present study aimed to assess the effectiveness of an explicit multicomponent alphabet writing instruction program implemented in grade 1. Using a quasi-experimental design, this study was conducted in first grade classrooms. Classrooms were assigned to either the experimental or control group. Eighty pupils in grade 1, aged 6 (mean age, 6.2), participated in the study and had their handwriting and spelling skills assessed prior to and immediately following the eight-week intervention. The results show that the experimental group (n = 40) had significantly higher writing outcomes in handwriting and spelling compared with the paired control group (n = 40), suggesting a positive effect of the intervention. These findings highlight the relevance for teachers of implementing and using an explicit multicomponent alphabet instruction program in grade 1 to support the development of writing skills.