You can view currently advertised jobs in Victorian government schools to get an idea of the learning areas that are in the highest demand from the DET Jobs in Victorian Government Schools page. The Saturday Age newspaper may provide some insight into roles available at Catholic and independent schools. Learning areas that are always in high demand include Mathematics, English and the Sciences.
Keep in mind that some study areas specific to VCE are not offered in all schools. To learn more about VCE studies offered by schools you may wish to browse the search for a school or study on the Victorian Curriculum and Assessment Authority website.