I do not have a pre-built curriculum but if I were to build one I would ensure it included courses on networking, building computers, building security into the design, etc. I would probably structure it this way:
IT Skills, building computers. Have them understand how computers work. Have them install Windows, Linux, MAC/Apple iOS, etc.
Networking skills, connecting the computers that were built. Have them understand how the computers they built work together.
Security design. Learn how to build the network insecurely and then hack it to see how easy it is to attack an unprotected network and build skills through success so they can see how a successful attack is supposed to work. Then later when protections are in place they can see that they are being blocked instead of not performing the attacks correctly.
Coding skills. Teach Python and Powershell. Perhaps let them learn several languages.
Database skills, website skills. Have them build databases and websites, then hack them.
If you had time you could look into malware analysis, incident response and tracking, more sophisticated networking (VPN, remote use, etc).
You would help the students immensely having those basic skills listed above. The biggest thing is to nurture the talent young. Keep the focus away from it being a "nerd" gathering as this may discourage some people from choosing it as a profession. Make the focus on job skills and building for a good future.
