This is going to be my annual "I don't get it" book, I guess. I'm puzzled by the almost-universal accolades. (Review will be especially long because of Newbery talk.)
The writing itself is good enough, though marred in my opinion by overuse of similes--some of which didn't make much sense. "By the time Saturday rolls around, we're used to living like emergency room patients." I have no idea what that's supposed to mean. "I answer as if the pope himself called me and told me I could go." ??? Franny isn't Catholic. It felt mired down in detail, as well; it was like a reference to the time period was shoehorned into every paragraph.
I felt like I've seen every character (especially the groovy older sister) several other places. People are excited about the cigarette-smoking mom--didn't they read The Green Glass Sea? Also, too many secondary characters in general; wait, which one is Denise Dubose and which is Judy James? etc. (I thought it rather odd that the author used the real names of her childhood classmates and made up characters for them. Especially the ones that aren't very nice.)
I think the book is needlessly confusing. While it's pretty obvious to the adult reader what the older sister is getting involved in, I doubt it would be to the child reader. Whether still not having any information about this at the end of the book would bother kids or not, I can't say, but I feel like when I was a kid I'd be all "wait, what about the big secret? what was going on? who is Ebenezer? did I miss a chapter in there?"
Then there's the issue of the documentary material. As others have mentioned, the longer historical/biographical passages really took me out of the story; sometimes they were more interesting than what was going on in the plot. And as others have also mentioned, most of the song lyrics were extracted and placed in such a way that (if one didn't know the song, and/or the significance of the picture on the same page) any meaning was lost. Some of the material I liked: the photographs, mostly, and the quotes from the preparedness film (although that was overdone by at least half) and the quotes from Kennedy's speech. From reading what others say, I gather the purpose is supposed to be that we feel like we're Right There With Franny, immersed in the early sixties. But this didn't work for me: for instance, there are several references to the death of President Kennedy, which doesn't occur within the time frame of the book. Franny is into Kennedy, of course, and she doesn't know he's about to be assassinated, yet the reader does. The adult reader already knows that, of course, and probably most of the child readers do as well. But the within-book consciousness of Kennedy's eventual death destroys the immediacy that might have been provided by the documentary stuff.
Reading this (and it was a struggle to finish; I think it's overlong in general, especially at the climax), a similarity I couldn't identify kept niggling at me. I finally realized toward the end that I was being reminded of books that did something similar but, to my mind, did it better--don't laugh, but it's the American Girl books. (I haven't read one in twenty years or so and was bordering on too old for them when they came out, but still enjoyed them mildly.) These also had (have?) documentary material in them, at the end. I enjoyed poring over these as much as I enjoyed the thin plotlines. But I remember that it was fun having them at the end and finding out the rest of the story of the things mentioned in the text.
This book is fictionalized memoir--I don't know to what extent--and the other book it reminded me of a great deal was Judy Blume's excellent Starring Sally J. Freedman as Herself. I'm not a particular Blume fan, but that book works in historical references more naturally and has (to me) a more engaging plot--it feels story- and character-driven, not historical-reference-driven.
Comments on anything anyone disagrees with in my review are, as always, welcomed.
Earlier: I'm impatient with this book, which is feeling like nothing but a baby-boomer nostalgia piece. I doubt I'd continue if it weren't being Newberyed-about.