Guided reading (GR) approach has been shown to have positive effect on reading fluency and comprehension. However, most studies on GR have focused on primary schools, specifically the Foundation Phase. Therefore, this study employed the GR approach to examine its possible effects on the reading proficiencies of Grade 9 English Second Language (ESL) learners in Gauteng province. Social and cognitive constructivism underpinned the study, which employed action research to determine the possible effects of implementing GR on the reading proficiencies of a sample of eight Grade 9 ESL learners who were purposively selected to participate in this study. Data were collected through interviews, observations, and reflection cards, oral and written reading tests. Results indicated that GR approach had caused a significant improvement in these learners' reading fluency and comprehension because of collaborative learning and scaffolding. In addition, GR also developed a sense of ownership in their learning, a sense of community and innovative and inquisitive minds. The study recommends that learners who struggle with reading be identified early, and GR intervention strategies be implemented and monitored. Every school needs to have a reading policy and the Education Department should ensure that it is implemented and monitored.