Crushing on an older guy

I am a sophomore in high school and I have a really huge crush on this boy who is a year older than me. We worked on a project together during the year but when it ended we fell off of talking to each other and it's been a few months since we've even said hi. I'm extremely interested and want to talk to him again but I don't have any classes with him and don't want it to be weird for me to randomly say something to him. What should I do when school starts back up??