Ramadhaan & Fasting

Not fasting in the month of Ramadhaan due to exams

Q: I am a student in Saudi Arabia studying in a private school in Dammam. Our school recently changed their examination dates. The problem is that Ramadhaan is during these days.

My question is that is it permissible for a student to skip 2 or 3 days of fasting for exams? I might not be able to concentrate on an empty stomach during the exam and while studying for it.

Recommencing the kaffara due to breaking one's fast before sunset

Q: Someone is doing kafaarah for ramadan fast. She is on her fifteenth fast. However when she was on her fifth fast she had broken her fast two minutes before iftaari but she carried on doing her kafaarah. What is the conclusion? Will her kafaraah start again from after that day or does she completely have to start all over again?