The Common Application, the admission form accepted by more than 400 colleges and universities, was created in part to ease the burden on high school seniors. No longer must applicants fill out a dozen different forms to apply to a dozen schools, including the nation’s most selective, reports the New York Times. So it was frustrating for Max Ladow, 17, a senior at the Riverdale Country School in the Bronx, to discover this fall that he could not get his short essay answers to fit in the allotted 150 words on the electronic version of the application, even when he was certain he was under the limit…