The Watertown Education Foundation is inviting local students in grades 1 through 5 to participate in the organization’s fourth annual spelling bee next Sunday. The fund-raising event will take place at Watertown Middle School at 10 a.m. Children can register in teams of three. Admission into the bee costs $20, or $60 per team of three. Registrations must be submitted by Tuesday. The event will also feature a raffle, with an iPad mini as the grand prize. Raffle tickets cost $10 for one, $15 for two, and $25 for five. The winner does not need to be present at the drawing. There will also be souvenir spelling bee T-shirts available for $10. For more information or to sign up for the spelling contest, visit the foundation’s website, www,watertowned.org/events.php, or e-mail firstname.lastname@example.org. Full story for BostonGlobe.com subscribers.