Abstract:
The purposes of this research were to specify the factors affecting the learning achievement in a Thai language, and to specify the relationship between school factors, family factors and learner factors and the learning achievement in a Thai language of Grade 5 students under the Suan Luang District Office, Bangkok. The sample consisted of 227 Grade 5 students in academic year 2018. The instrument used in the research was a five-rating scale questionnaire with validity between 0.67-1.00 and reliability (Cronbach Alpha Coefficient) 0.94. Data were analyzed by percentage, mean, standard deviation and Pearsons Product Moment Correlation Coefficient. The results showed that school factors, family factors and learner factors were at a high level, and there was a relationship between each of the factors and the learning achievement in a Thai language, related to all factors with a correlation coefficient between 0.139 and 0.236, and considered to have a low relationship. Family factors and learner factors were correlated with the learning achievement in a Thai language with statistical significance at the level of 0.01 and school factors were correlated with the learning achievement in a Thai language with statistical significance at the level of 0.05