Graduation time is life decision time for many high school students. Non-college bound students face even more of a life adjustment than those students continuing the formal classroom route. Job outlooks, work environment, and training in all the trades have changed dramatically over the years. Your fiction collection could also have titles that should be removed. In addition, check your audiovisual collection and any materials in vertical files or career collections.
Currency is a prime consideration.
You can't predict the future, but you should have the most current information available. You can't depend on publication date alone to judge currency, especially on titles released as new editions but still containing dated information or photographs. Accuracy is difficult to judge but just as important. If you are not sure of projections of work conditions, wages, etc. Bias in the presentation is also a consideration.