This means that Grier will need to show that he did not know .
He Grier not have a reasonable expectation of knowing that somebody else was Grier him the banned substance , or that a school official incorrectly Grier him it was acceptable .
This means that Grier will need to show that he did not know nor did he have a reasonable expectation of knowing that somebody else was giving him the banned substance , or that a school official incorrectly told him it was acceptable .