Yeah, the mom featured in the article should also double-check her son's abilities in spelling. And other subjects.
EDIT: Math grade inflation really ain't new. Back in the later 1980's, I taught a few lower-level math courses at (on paper) a major research university in Michigan. Rule of thumb was that every undergrad taking our "Algebra 101" course (of which there were thousands every year) had gotten through all 4 years of their high school's top-end math courses. With good grades. Hard reality was that any student who actually learned and retained 1 1/2 years of HS math could easily place out of the course. And there were still loads of students who still couldn't manage to get an easy "B-" when they took our hand-holding Algebra 101 course.