We have a student who received Tier II intervention time from first grade on. Breaking the code was not happening for her. It became clear in fourth grade that she had dyslexia. She did not see letters in the correct order, and had to learn through isolating individual letters. Reading Horizons with a one-on-one tutor made a major difference for this student. She learned to read by the end of her first year with Reading Horizons. Before this point she was trying to memorize whole words. In sixth grade, she is no longer one of the students that the classroom teacher would place on a "watchlist." I would highly recommend Reading Horizons for any students who are having difficulty learning to read. We use it in our K-2 classrooms, and also in our Tier II interventions.