Goofs:
I'm pretty sure it's against every school's rules (if not some sort of federal law) to have an entire third grade class- or any big group of kids under 18- go on a field trip without parent chaperones. If it's an overnight trip, I'd imagine that they'd have at least one chaperone for every three kids in real life.
If the distance to Capital City is so short that Nelson can bike up there, why did the kids have to stay overnight anyway?
Previous episode references:
[7F01] Appearance by Governor Mary Bailey
Review:
WOW! After being largely unimpressed by this season's TOH and disappointed by the guest-star-o-rama of Helter Shelter, I am pleasantly surprised by this episode. One coherent plot from beginning to end, a storyline that hasn't been recycled from an earlier episode, plenty of jokes, a Maggie gag, and all of the family acting in character. Altogether a very funny and well-crafted episode. A+