We should be teaching them home economics skills like time management, how to handle money (e.g. avoiding bad debts) and things like nutrition, cooking and how to navigate the health care system. That way they will be prepared to create a healthy & stable life for themselves, no matter what career path they choose.
Beyond that, some additional logic and problem solving focused courses would be helpful. Followed by increased focus on narrative based philosophy/history/social studies and hands-on skills like arts & (metal/wood)working. Once everyone is graduating HS with a basic competency in those areas, then maybe we should find a place for some tech only skills like programming languages and methodologies.