Middle-class families do not take their children out of school to work in the fields or in a sweatshop because they do not need the tiny extra income a child’s labour brings in.

中产阶级的家庭不会让孩子辍学去到农田里干活或到血汗工作打工，因为他们不需要孩子挣的那点额外收入。

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They do not have special lessons as such but meet once a month after school - rising to once a week in their third year - to learn study skills and take on extra work they would not be able to do in a whole-ability class, a recent example being chromatography in chemistry.

BBC: News | Education | Extra help for gifted pupils divides heads