She became Head Cheerleader after Mackenzie invited her to join the Cheer Squad , but quit when the hard work and having to deal with Brittnay caught up with her. Because she didn't attend try-outs, Shay didn't get the title of Head Cheerleader, and Mackenzie did. However, any sign of friendship was quickly broken off when Shay quit the cheer squad because of Brittnay swearing revenge on the Cheersquad, and swore to Mackenzie to usurp her title as the most popular girl in school, and teamed up with Brittnay to take Mackenzie down, forming team Shittnay. And I'm all like, "fucking save it bitch, I'm already rich and beautiful.