Possible Clues:

• 'Seems just a little angular for the graduate (3,6)'
• A single bit of temperature you get at college
• Ma, perhaps, makes for graduation
• Just a little hotter from the university
• Might Ma, perhaps, be just a little angular?
• From the university there's very little by way of 28 across to be had
• One might angle for this a little at college
• Just a bachelor's, which is nearly a frost
• Ma might perhaps angle for it
• There's not much angle to what you get form college.