Your goal is to get them to come to your studio for mini sample sessions and get their opinion on senior pictures and current senior styles and fashions. Get these images and their comments on the class officers FB and Twitter. Post the same information to your studio blog. Do some video snippets of these sessions and interviews and yes, put them on FB and your blog. Tweet the links.
How to get started. You are going to send them a letter addressed to Junior Class President, ABC High School. Your letter should present the idea that as a class officer their opinion and thoughts are important. This letter must be flattering to them but also sincere. You would like to show them how much fun pictures can be and how much their loved ones will appreciate having a professional photo prints. You get to show their family, them and their friends how much fun and how important senior pictures are in their lives. During the session and pose viewing you want to get their opinions of senior pictures. Take some video featuring their comments and experience. After they get a few prints and present these to their families get some more reactions from them and their parents and friends. All of this can be edited tastefully and placed on your blog, Facebook and Twitter. Later these officers might be able to create a small mailing list of their friends for you, you just need to ask. You should now have samples of the next senior class online to show and stir up a little action. You will also have testimonials explaining the value and importance of senior pictures on your blog and social media pages.