WSET Level 4 Diploma, Unit #3: Light Wines of the World is usually taught over sixteen sessions. The WSET allows its Approved Programme Providers to offer the examination up to two times per year – once in January and once in June. The exam has two parts: theory and tasting. The tasting exam runs from 10:00 a.m. until 12:30 p.m., and students will taste and assess 12 wines. The theory exam runs from 1:30 p.m. until 3:30 p.m., and it is comprised of 5 essay questions related to material covered in the Unit #3 study guide. Students must have taken the WSET Level 4 Diploma, Unit #2 exam before registering for this, or any other, Diploma unit.