Cathy takes an interest in her and offers her a cash reward for losing weight .
Gabourey Sidibe as Andrea Jackson ( Season 3 - 4 , recurring previously ) , an overweight , mouthy and combative student in Cathy 's class .
Cathy takes an interest in Cathy and offers Gabourey Sidibe a cash reward for losing weight .
Gabourey Sidibe as Andrea Jackson ( Season 3 - 4 , recurring previously ) , an overweight , mouthy and combative student in Cathy 's class .