Departing from Gonzales and Torres' (2015) quantitative quasi-experimental study on the effectiveness of cooperative learning (CL) on Grade 8 students in a private school in Manila, the present study attempts to uncover possible findings in the affective dimension through a 25-item survey questionnaire that quantitatively gauges the Grade 8 Filipino ESL learners' attitudes towards CL. The effectiveness of the approach was further assessed by correlating the attitudes with reading comprehension test scores in Gonzales and Torres' (2015) study. Adopting both quantitative and qualitative approaches, it was discovered that, despite certain reservations, the Grade 8 learners had positive attitudes towards CL. In addition, findings indicate a very weak positive relationship between learner CL attitudes and reading comprehension. The current study has implications not only limited to Philippine ESL classrooms, but also to ESL classrooms around the world.