RESEARCH PLAN 1. Research Problem: (What is your research problem?) The researchers found out that there are positive and negative effects of online selling as part time jobs in terms of academic performance and health. Due to the popularity of online selling, students find it a great opportunity to have it as their part time job while they are still studying. Due to lack of financial support to continue studies, some students find online selling a good opportunity to earn money that sustains their necessary needs in school and home while they are studying. Being an online seller while studying faces a lot of consequences, stress, forgetting to eat, lack of sleep, having poor eyesight because of radiation from cellphones, and they cannot focus on their study. 2. Rationale: (Why do you want to conduct this study?) The purpose of this study is all about the Positive and Negative effects of Online Selling in academic performance of Senior high school students of Caniogan High School.The results of the study revealed that there are both beneficial and detrimental consequences of internet selling as a part-time profession on health and academic achievement. The study's findings will be beneficial to students in general, but especially to those who work online while they are learning.Some students find online selling a good opportunity to earn money that supports their necessary needs in school and at home while they are studying because they lack the financial support to continue their studies.However, many students who engage in online selling find that their education is negatively impacted. 3. Significance: (Why is it important to be conducted?) It is important to conduct this research to understand the challenges faced by senior high school students who promote businesses for online selling. 4. Objective: (What is your goal to achieve in this study?) 5. Method and Design: (Is it a quantitative or a qualitative study?) Respondents: (Who or what will be the source of your data?) The researcher conducted the study to the students of Caniogan High school during the school year 2022-2023. The 80 senior high students including grade 11 and grade 12 were chosen randomly as a subject in the study. Sample Size: (How many respondents does your study need?) The respondents of this research study were the eighty (80) selected students from Senior High School. Sampling Technique: (How will you choose your respondents or source of data?) By using simple random sampling. We need to start by deciding on the population that we want to study. It’s important to ensure that we have access to every individual member of the population, so that we can collect data from all those who are selected for the sample. Next, we need to decide how large our sample size will be. Simple random sampling have two ways, the lottery or random number method. But we will use the random number method. We will assign every individual a number. By using a random number tables, we randomly pick a subset of the population. GREGORIO, BHEYA C. SICAT, ANDREA C. BUBAN, PRINCES JANE C. BUAN, JENNA CRISTIA F. SANTOS JR., MELOR C. VERAME KENNETH