The mixed-method study used a quantitative questionnaire to collect feedback from teachers and program directors regarding the current practices of quality assurance approaches in General English (GE) training programs at their higher education institutions (HEIs). Additionally, the study sought their evaluation of applying accreditation schemes to ensure the quality of GE training programs using a semi-structured interview. The results indicated that the quality assurance measures implemented in the GE training program were generally perceived as effective and aligned with industry standards and best practices. However, there needs to be a comprehensive QA approach that covers areas of improvement related to the learners' needs and expectations and the implementation of QA approaches for curriculum effectiveness. Informants were found to have positive evaluations of the application of the existing accreditation schemes for GE training programs at HEIs in Vietnam. Research on the effectiveness of a specific accreditation scheme implemented at particular HEIs in Vietnam will be conducted in the future.