The aim of this research is to explore how different variables influence the results of training completed by teachers of young learners. This research was conducted in Indonesia using the correlational research method. Samples of 418 teachers were taken from 11 provinces across Indonesia using the multistage random sampling technique. Questionnaires, interviews, and documentation were used in data collection, whereas the descriptive statistical and inferential techniques were used to analyse the data. Six variables were considered: (a) quality of instructors, (b) completeness of facilities, (c) availability of modules, (d) quality of the evaluation, (e) suitability of materials, and (f) quality of the inputs. Three of the aforementioned variables--namely, regarding materials, instructors, and input sessions--contributed significant effects to the training results. The findings were thoroughly discussed based on the perspective of further analysis, theories, and previous studies.