This is real genius at work.
A high school student snuck in a little nod to Notorious B.I.G. in her yearbook quote, via the periodic table. By taking the chemical symbol for each of the elements listed, it spells out a nasty little message, and a quote from the late great Biggie Smalls - among other rappers.
"(F) flourine (U) uranium (C) carbon (K) potassium (Bi) bismuth (Tc) technetium (He) helium (S) sulfur (Ge) germanium (Tm) thulium (O) oxygen (Ne) neon (Y) yttrium"
That's the way to go out at graduation.