Teachers are constantly searching for teaching strategies that would be effective for their learners this time of Covid-19 public health emergency. Thus, this study sought to improve the reading level of Grade four learners of Bangbangolan Elementary School for the school year 2020-2021 through Teacher-Parent Reading Instruction Partnership (Offline Platform via Phone call). The experimental design was utilized with an adopted reading level test as data-gathering tool. The quantitative data were treated using the mean score, percentage, paired and independent sample t-test. The research subjects were from Grade four Ladio (experimental group) and (control group), both with seven (7) learners. The t-test revealed that these two groups were of equal abilities at the beginning of the study, with a tstat of 0.22 < t-crit of 2.45 at a 5% level of significance. After applying the intervention for 12 weeks, the control group manifested poor reading level and experimental group showed high reading level based on their post test results; however, the experimental group attained a higher improvement compared to the control group, which used the Self-Learning Reading Materials, as shown by the tstat of 5.94 > t-crit of 2.45 at the 5% level of significance. Hence, the Teacher-Parent Reading Instruction Partnership (Offline Platform via Phone call), used in this action research was an effective learning platform in improving the reading level of learners amidst Covid-19 public health emergency.