Yes. Students with learning difficulties such as dyslexia, attention problems, and general cognitive impairments or delays need comprehensive and explicit instruction. They also need carefully sequenced lessons and instructional language that is simple but precise. All this is provided by ABeCeDarian.
For students who are fortunate enough to have no particular learning difficulties, teachers will find that ABeCeDarian's precision and efficiency accelerate learning and allow these students to quickly read at grade level or above. Furthermore, because so many of the activities are in puzzle-like form, children of all ability levels remain very engaged.
What will vary among students is how much repetition and practice they will need to master the material in each lesson. Explicit pacing guides allow teachers to understand very accurately how much practice a particular student needs with material in a lesson before progressing.