This study was conducted to determine the assessment of parents on the effectiveness of using the Mother Tongue Based-Bilingual Education through modular teaching in the areas of self-reading of learners on module lessons and activities, oral instruction comprehension of learners, and comprehension of learners on written test instruction and their challenges encountered.  Quota sampling was used.  The study was conducted on 250 parents whose children are enrolled in grade 1 for the school year 2021-2022 in the six schools of Midsayap Central District.  The parents agreed that MTB in modular teaching is effective in the areas of self-reading of module lessons and activities, oral instruction comprehension of learners, and understanding of learners on written test instruction.  Regardless of age, sex, tribe, religion, or academic ability, parents agreed that MTB worked well in modular teaching.  However, the parents assessment of MTBs effectiveness in modular teaching differs when grouped according to educational attainment in the area of learners comprehension on written test instruction.   The parents perception on the effectiveness in the three areas employing Mother Tongue Based-Bilingual Education is significantly related to parents challenges.  The delivery of appropriate learning to the learners is hindered by lack of strategies to strengthen their speaking and understanding abilities in their mother tongue, limited knowledge and skills in teaching, and insufficient sources of information.

modular teaching

self-reading of learners

parents

effectiveness

mother based-bilingual education

self-reading of learners