Abstract: The study investigated the in-service training needs on Learning Delivery modalities of teachers in the Senior High Schools of Iba, Palauig and Botolan Districts of Department of Education, Division of Zambales, Philippines during the first quarter of the school year 2020-2021. This study was conducted in consideration of the changes in the Basic Education during the world health crisis or the COVI19 Pandemic. The present study used a descriptive research design with survey questionnaire as instrument for gathering of data from senior high school teacher-respondents and the statistical tools employed were descriptive and inferential statistics. Findings revealed that majority of the senior high school teachers are in their middle adulthood and holders of Bachelor’s degree with Master’s units. They highly need trainings for Learning Delivery Modalities the ‘new normal’ in the basic education primarily on the guidelines on blended learning design, on flexible learning for synchronous sessions, how to bridge the digital divide with offline learning methods and classroom preparations for blended learning designs. The result of the ANOVA computation revealed a no significant difference on the perceived extent of in-service training needs on Learning Delivery Modalities when grouped according to teachers’ age and highest educational attainment. The researcher recommends that the training plan/program for Learning Delivery Modalities, may consider the conduct of seminars, workshops, in-service trainings and learning action cells (LACs) sessions on the following themes or key areas: (a) blended learning design; (b) teachers’ classroom preparation for blended learning; (c) utilization of flexible learning through synchronous and asynchronous sessions; and (d) digital literacy for an improved teaching methods.