It is quite possible that different educational establishments refer to graduation in slightly different ways. In those establishments (in England) that I know about the usual form would be :"she graduated in...".

Using the word "since", as in "I graduated since five years" is a common mistake made by non-native speakers of English when the correct form is "... five years ago..."

It is quite possible that different educational establishments refer to graduation in slightly different ways. In those establishments (in England) that I know about the usual form would be :"she graduated in...".

Using the word "since", as in "I graduated since five years" is a common mistake made by non-native speakers of English when the correct form is "I graduated five years ago."