Seems like that. TPM has been reporting on it all day. The green screen behind McCain was part of the lawn in front of the middle school in Hollywood. It gets better the school has now issued a statement from the principal:

TPM

It has been brought to the school's attention that a picture of the front of our school, Walter Reed Middle School, was used as a backdrop at the Republican National Convention. Permission to use the front of our school for the Republican National Convention was not given by our school nor is the use of our school's picture an endorsement of any political party or view.

Los Angeles Unified School District Board Member Tamar Galatzan issued this statement:

Though I am flattered that Senator McCain chose to use a school from my district as backdrop to his remarks at the Republican National Convention, I wished he had checked with me first. As a strong believer in public education, I don't think the Senator is the most appropriate person to showcase one of the premier schools in the Los Angeles Unified School District. He is unwilling to bring fairness and equity to No Child Left Behind and ensure that schools like Reed get the resources they need from the Federal Government. From what I've heard, that's not a priority for the McCain/Palin ticket.

You just shake your head and say WOW! These guys cannot differentiate between Walter Reed Army Hospital, the nation's premier VA hospital, in Washington DC from Walter Reed middle school in North Hollywood! On their convention day!! Behind their presidential candidate who is talking about national security and his POW experience!!! And we are supposed to trust them to bring change to Washington!!!! How incompetent can they get??? Moreover McCain's new ad mocks Obama's acceptance speech backdrop. Sen. McCain here's a hint, first learn what Walter Reed Army Hospital looks like, then get your backdrop corrected and get some competent people to run your campaign, then and only then can you start throwing stones from one of your eight glass houses. But don't expect people to vote for you because time and again your party has proved that beyond shrill, nasty and divisive rhetoric they are just a bunch of incompetent fools.