This single case study (multiple baselines) evaluates the efficacy of an intervention called "reading racetracks" among three eight-year-old boys with diverse backgrounds, including learning disabilities, limited language proficiency due to migration, and socio-economic challenges. Conducted over three weeks, the training demonstrated notable improvements in the participants' ability to recognize and pronounce words quickly. Statistical analysis confirmed these results, with no baseline trends detected and a significant overall treatment effect indicated by a high Tau-U score. This finding suggests that reading racetracks can be an effective, universally applicable method of improving reading performance in diverse student populations.