The aim of this research was to determine the relationship between the level of knowledge and the behavior of throwing away waste among students at MTS, N Seunuddon, North Aceh. The sample in this study was 18 grade 3 students with a quantitative research design with a cross sectional design. Instrument testing included Independent Variables which included Level of Knowledge and dependent variables including waste disposal behavior at MTS.N 9 Seunuddon North Aceh and statistical tests The type of sampling used in this research is total sampling. The research results showed that almost half of the respondents knew the results of calculating the respondent's knowledge before conducting counseling. Most of them had good knowledge with the number of respondents being 10 respondents (55.6%), and 8 respondents (44.4%) getting less good results out of a total of 18 respondents (100,%). It is known that the results of calculating the knowledge of respondents after being provided with educational counseling said that the level of knowledge was very good with the number of respondents being 17 (94.4%) and 1 respondent (5.6%) being less than good out of a total of 18 respondents. With the results of this research, it is hoped that school administrators, especially teachers, will provide health education or counseling about Clean and Healthy Living Behavior (PHBS), especially about knowledge and behavior of disposing of waste to their students.

Tuberculosis (TB) is currently a public health problem in the world, especially in Indonesia. Pulmonary TB is ranked 2nd as the main cause of death from infectious diseases after Human Immuno deficiency Virus (HIV). Pulmonary Tuberculosis is easily spread through the air when people who are sick with Pulmonary Tuberculosis release bacteria through the coughing mechanism. The spread of these bacteria is through sputum splashes or droplet nuclei released by TB sufferers through coughing, sneezing or talking face to face. The increase in TB cases is related to the degree of health in the community. The biggest factors that affect the degree of health are environmental factors and community behavior itself which can be detrimental to health. Risk factors for Tuberculosis transmission are environmental factors and behavioral factors, environmental factors include ventilation, housing density, temperature, lighting and humidity. While behavioral factors include smoking habits, spitting or throwing phlegm anywhere, coughing or sneezing without covering the mouth and the habit of not opening windows and not implementing clean and healthy living behavior (PHBS). This research method is a quantitative study with statistical tests with a cross-sectional design. This study was conducted at SMP 4 Ulee Rubek, North Aceh in November 2024. The research sample consisted of 15 children, Data collection techniques using questionnaires. Data analysis used descriptive statistical tests to test adolescents' knowledge about how to prevent TB. In addition to effective coughing, there are several ways to control pulmonary tuberculosis, namely by cultivating a clean and healthy life and cultivating ethical coughing behavior.