If I understand correctly, you are in need of members and support from the school (you said "getting your team more involved with your school"). Or if you mean, 'what can my team do to help the school,' disregard what I'm about to note. Here are a few ideas, most of which we've done:
- If you have a website, make it known
- Put up posters
- Get the team on the air (i.e. morning announcements) for membership and results of competitions, etc.
- Make it known what you're doing when fundraising at your school
- Have everyone wear uniforms one day to raise awareness
- Hold a demonstration at an assembly or in a public area at lunch or after school with your robot and some screens to show animations, etc.
- Get your principal involved
Some of these may seem obvious, but you might be surprised how many teams don't do this.