Related Clues:

• Apertures in the eye
• Ones in class
• The professor's students?
• Tallis ____, ensemble specialising in early choral music
• Splinter groups disregard stronger members of a certain class
• They're taught a number of lessons by slip up - and that's only seen retrospectively?
• Apertures in the eyes
• Finally teach class or upset those in it?
• Class contingent
• Students of 7 down?
• Those in the student block looking to pick up the post in Dean's Place?
• Concerns of teachers and ophthalmologists
• Men of letters
• Students and eye apertures
• They learn of the sun's trapping carbon and hydrogen