As soon as you have registered on Classlist - you can add an event and start selling tickets even before you have any members! Simply enable guest checkout via the event sharing option, and then share the link with the people you want to invite.
Guest checkout is great because:
Note: Don’t worry, people will only be able to use the link that you share. And won’t be able to search for the event on the web.
Remember to invite a group or the whole school by clicking the ‘Add some guests’ button and of course, ‘publish’ the event when you're finished.
TIP: Add the link to your school newsletter.
For more information, view the Using a Guest Checkout to launch an event help article.