Brighton College introduced the classes in etiquette after a survey of company directors said graduates displayed impoliteness and poor table manners.
Headmaster Richard Cairns said exams were "only part" of preparation for adult life.
He said pupils also needed to know how they were meant to conduct themselves.
The classes offer year nine boys and girls at the fee-paying school instruction on practical matters to equip them for civilised society, he added.
The 13 to 14-year-olds are invited each week to lunch or dinner in the headmaster's house where subjects include how to deal with food they dislike.
The course was introduced this term at the 140-pupil college where boarders pay more than £24,000 a year.
Other lessons include how to iron a shirt, lay a table, reply to an invitation, tie a bow tie and how to waltz.
Mr Cairns said: "Our role is to equip our pupils for all aspects of adult life.
"Exams are only a part of that preparation.
"Just as important, in my view, is whether a young person has a grasp of basic etiquette.
