Kenton,
Alumni, particularly older alumni, tend to want to continue being associated and involved with their alma mater when they perceive that it holds prestige. Consider how your department and entire school works toward a long-term branding strategy that shapes this perception. Sharing stories of prominent alumni success, awards/honors bestowed upon the school, etc. can help in this regard. The more proud alumni feel about their school, the more affinity they will have toward the brand. Award programs help with this as well. It is recommended to have a "master" plan that outlines your message - what are the core "talking points" that align to the strategy. Then, create a content calendar to decide ahead of time what you will publish that aligns with message. Use content curation tools to help find content like Google Alerts. Get Google alerts and Google News Alerts as feeds and use feedly.com to centralize and organize all curated content. This helps manage the process of curating content. Scheduling tools like BufferApp and HootSuite help manage the publishing process.