Related Clues:

• No longer at school and possibly retired
• Address to a bloke
• Sounds like water mark is out-of-date for school-leaver
• "Good" one in an exclusive network
• Student of the past
• Fund-raising target
• (US) college graduate
• US college old boy
• Old pupil a bright one nothing bypassed
• It's bloody awful, my dear chap!
• Former school pupil
• Usual disaster admitting man, heartless old boy
• Man with hesitation when meeting students? He was one himself
• Graduate snipping end off a wart - star turn
• Usual upset about fellow ignoring a former student