Teachers in Texas sued so they could give students inflated grades they hadn't earned (aka 'minimum failing grades'), but a judge ruled that "Texas public schools are required to give students truthful grades on class assignments and on their report cards."
Thankfully someone is sane in the Lone Star state and (surprise, surprise) the AFL-CIO associated American Federation of Teachers sided with the state against the 11 school districts with the (obvious?) position that "the minimum failing grading polices were dishonest and didn't prepare students for college or the workforce." (source)
I know this is an off-the-wall thought here, but maybe finding a way to engage the class and make the day interesting would naturally boost grades removing the need to artificially inflate them...? Too crazy?