Doctoral Thesis / Dissertation from the year 2021 in the subject Didactics - Common Didactics, Educational Objectives, Methods, , language: English, abstract: The study determined the relationship between the academic environment and the academic achievement in the core subjects of the Grade 6 learners of two schools as basis for learning worksheets. The study was centered on the areas concern; profile of the teachers and learners; results of the Periodical Tests in the five core subjects; extent of the factors affecting the academic achievement of the learners as to learners themselves, family, learning environment and teachers. The Descriptive Method was used employing the questionnaires to assess the achievement profile of the Grade 6 learners. Treatment of the data used statistical tools of percentage, weighted mean, and test of significant relationship. It was found out that majority of the respondents were 11 years of age and females; parents' highest educational attainment was High School Graduate; had combined family income within the range of Php 5 000 - Php 10 000; 7 and above members in the family; and were living in a duplex. The result of the Periodical Test in the five core subjects were interpreted as Low Mastery. All of the results did not meet the Planning Standards of 75% Performance Level (PL) as prescribed by the Department of Education (DepEd). Moreover, the study reveals that the identified factors - learners, family, school, and teachers affected the academic achievement of the learners in school. To improve the abovementioned performances of the learners, learning worksheets are proposed to be used.