The increasing number of students who lack proficient reading skills is well known in Germany, as well as globally. Students with learning disabilities (LD), problem behavior, and German as a second language (L2) may face even greater hurdles. However, it is essential for teachers to provide adequate support to maintain equal educational opportunities. Word recognition is fundamental to reading, and thus, we designed lexical and sub-lexical unit training through a peer-tutorial repeated reading racetrack and evaluated the effects on student proficiency with trained and untrained words. A multiple-baseline design was implemented (N = 8), and the intervention took place three times a week over six weeks. The results show promising indications that the intervention is an effective tool to improve reading in a short time, yielding moderate to strong effects on trained and untrained words.