I have been teaching preschool for more than 20 years. One of the most effective ways I have found to consistently assess and record written and oral language progress is by using journal pages as a part of a student portfolio. I design these pages to also measure other child development skills allowing me to record data in as natural of a setting as possible and ensuring that I have continual one-on-one learning experiences with each of my students. They can also be used as stand alone activities. These pages are in English and Spanish.
This particular page I use for a check in on name writing progress and also to begin with letter identification which I always begin by having them learn the letters in their own names.