I would say ages 12 and up. There are some mature themes in Breaking dawn, though
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I don't know, but I wouldn't try. The Twilight series(it's technically not a saga by definition) ranges from 4th to 5th grade level. Unless you read at that level, I wouldn't. By the way, the last time I tested in 4th grade level, I was in 2nd. Now I a 13, recently, and in the 7th grade. I have exceeded a college senior and therefore can read any book I would like. I hate Twilight though, and vouch for Harry Potter. No clue what the person above is talking about but, my daughter is in the 4th grade. For her, the four books range from 20 - 28 points. Hope that helps :)
Scholastic.com lists the reading level as 3.4, so according to them, it's essentially a third grade book. My third grader has read all four Percy Jackson books, and he can't put them down!
Too old to be reading young adult fiction
6th thru 8th grade.
it depends on which school you go to. you might want to ask your librairian at your school. at my school, they don't allow you to take tests on twilight because they think its bloody and gore. its really stupid. I go to verde elementary school in boca raton, florida. so maybe in your school they allow you to take tests on twilight. GOOD LUCK!!!