If you've accidentally requested to get connected to the wrong school, no worries! The University will more than likely decline your request to connect with them once they realize you are not affiliated with their school.
In this case, we recommend reaching out to the Career Services Center at your University, providing them with your email address, and informing them that you have created an account - they can link your account to the University. Then you'll be able to fully use all of the features in Handshake.