If you are a full-time student you might qualify for a Council Tax discount or exemption.
A full-time student is someone who is undertaking a course which either;
You will not be entitled to any reduction if you live in a household with two or more non-students or part-time students.
If you have a non-British spouse or dependant living with you who is not a student, your student discount/exemption may still apply. They must have a visa which prevents them from taking paid employment or claiming benefits.
Please be advised that this reduction is only for the period whilst you are undertaking the course of full-time education. Should your course end before your tenancy end date you will be responsible to pay the Council Tax. This includes the period prior to your exam results or graduation.