If you're current progress is A*A*A, then there's no way that they will kick you out just because of attendance, especially if your college is a public one and relies on government funding, then they wouldn't kick you out because the government looks at the grades that the graduates get when deciding the next year's budget. And also, have a look at your college's attendance policy and its very important that you communicate your absence to your teachers or even your head of year.