Data tracking is one of the most important tools that I use in the classroom, especially for Fundations, and students benefit from instruction that is tailored to their specific needs. Students are grouped in Guided Reading groups based on their reading level, but I also take into consideration which letters and letter sounds that students need to master. When planning for whole group phonics, I take into consideration which letters students struggle with the most (based on assessments) and can spend more time on certain letters if students need more detailed instruction. Below is an example of my student letter and letter sound tracker. If students can identify the lowercase letter and identify the letter sound, they score 100% on the letter. If students only know the letter or only know the letter sound, they score 50%. If a student does not know the letter or the letter sound, their scores is 0%. There are several students who came into Kindergarten knowing no letters or letter sounds, as detailed below. Those students are ones that receive tailored interventions during Guided Reading centers.