CaST Portfolio is a university model for what high school can be, integrating the work of multiple, independently operated for-profit, non-profit and charitable organizations into a unified whole supportive of advanced teaching and learning for high school students. Collectively, Portfolio affiliates CaST Public Arts, CaST Center for BioInformatics Research and CaST Earth encircle CaST School, bolstering its mission-driven purpose to deliver a Ministry-approved Ontario Secondary School Diploma (OSSD) curriculum through superlative teaching. It is as if a university, composed of multiple small colleges each offering a different set of courses and research opportunities, were designed for grades 9-12 students.