All VCE studies are organised into units. VCE subjects typically consist of four units with each unit covering one semester of study. Each unit comprises a set number of outcomes (usually two or three); an outcome describes the knowledge and skills that a student should demonstrate by the time the student has completed the unit. Subject choice depends on each individual school. Units 3/4 of a subject must be studied in sequential order, whereas units 1/2 can be mixed and matched. Students are not required to complete all the units of a subject as part of the VCE course, meaning they are able to change subject choice between years 11 and 12.
