ESW Primary School: Introduction to Wine. ESW intermediate: Understand the main grape varieties, wine characteristics, grading system, main terms and spirits in various countries and producing areas around the world, and achieve intermediate wine tasting skills. ESW Advanced: This core course covers every element that can be involved in the wine industry, including wine cultivation and brewing, climate and soil, characteristics and classification of each sub-producing area, advanced catering, wine cellar management, and advanced tasting skills. ESW Tutor Certification: This training program mainly provides auxiliary tools and mature programs for prospective tutors and existing tutors to ensure the teaching quality of each level of courses in the ESW grading system.