Splash! is a yearly academic outreach program that invites middle school and high school students to visit MIT and attend classes created and taught by MIT students and alumni. Splash! is run by MIT's Educational Studies Program, known to most as ESP.

Classes offered over the program's two days present a wide variety of options and are often considered reflective of the MIT culture. Splash! classes are generally two hours long and range from discussions and interactive projects to intense academic seminars. Attendees are encouraged to take as many classes as they would like.

A few of the over 275 classes offered in 2005 were:

• Wikipedia: Investigate Your Homework or Be the Teacher!
• Persuasion Tactics
• Nonlinear Dynamics and Chaos
• Learn the Salsa
• Duct Tape 101
• Robot Physics
• How to Build a Thermonuclear Bomb Using Things Found Around the House
• Time Travel
• How the Brain Works
• Make Sculptures Out of Chocolate
• Video Games: An Insider's Look
• How to Achieve Immortality
• Fundamental Tactics of Zombie Survival

The cost for students in 2005 was $20, excluding meals.