Robert Canning from IGN rated this episode 8.8/10 and called it 'the best episode of the 20th season'. It's a decent episode, but I didn't think it was the best of the season. 'Coming To Homerica' or 'Eeny Teeny Maya Moe' would have to take that title.
The episode gets off to a good start, with Marge discovering how bad Springfield Elementary has gotten and decides to move them to Waverly Hills Elementary, but they have to own an apartment, due to regular visits from the city inspector (an obvious parody of Anton Chigurh from 'No Country For Old Men'). Bart becomes known as the 'bad' kid and is very well respected by pupils. Lisa, however, is unsurprisingly unpopular, so Bart tells the students that Lisa is friends with popstar Alaska Nebraska.
There is also a decent subplot, where Homer starts to live like a bachelor, and he & Marge 'rekindle' their romance.
Above all, the episode is full of positives, such as the parody of Hannah Montana (Alaska Nebraska)and the city inspector.
9/10.