LONGVIEW — Fewer than 1 percent of high school students earn a perfect score — 800 points — on any section of the Scholastic Assessment Test. It’s an achievement that, before this year, Woodland High School Principal John Shoup said he’d only seen three or four times in his 20 years as principal of the school. So he “flat-out couldn’t believe it” when three students from Woodland High School each got an 800 in the math section of the SAT this year.