Windows laptops are less expensive and easier to fix than mac books. The reason people choose a mac over a windows, is because the mac is a lot simpler to operate. However, if you buy a good windows laptop, they can last much longer and be just as easy to use as a mac. Fixing one is going to be less expensive (if something goes wrong) than a mac book. Plus as a student, that extra money left over from a windows based laptop would be very helpful. Having a good antivirus, antimalware and antispyware is also always a must on any system, regardless of os.
Try these, or similar models:
Acer Aspire E 15 E5-575-33BM
Asus X540LA-SI30205P
HP Notebook 15-ay011nr