<p>What is common application?</p>
<p>"The Common Application is a not-for-profit organization that serves students and member institutions by providing an admission application – online and in print – that students may submit to any of our nearly 300 members." </p>
<p>-- So... it's to help students in applying to college by providing an admission application that they can submit? I'm not sure I understand completely...</p>
<p>Rather than a student filling out a separate application for each college they apply to, they can fill out the Common Application and submit it to all of their schools. Many (maybe most?) colleges have supplements to the Common App, which include extra questions and essays.</p>