My school did--at least it taught debugging. In his memoir of his secondary school years, <i>What's to Become of the Boy: Or, Something to do with Books</i>,

My school did--at least it taught debugging. In his memoir of his secondary school years, <i>What's to Become of the Boy: Or, Something to do with Books</i>, Heinrich Boll talked about his older brother's method of tutoring him in Latin and mathematics: work back to sound knowledge and then build up from there. Boll writes that he used the technique in tutoring classmates also.