Look at this well-designed flyer. Made by FlyerHeroes for you to promote not just summer sessions but your all-year-round events, parties, and your pub, clubs, and bars in an attention-grabbing way.
Use this PSD template which is fully customizable and check its photo-based layout that made things way more attractive. It’s up to you whether to import a couple of large photos that covers photo slots, or to fill each thumbnail with a different photo. Make the best use out of it and add your own texts. Now you are practically done here, take the next step and spread the flyer among folks to have them gathered at your event.