Twelve of the highest performers in Hong Kong’s main university entrance exams have been revealed to come from nine traditional elite schools, with La Salle College, which provided three of the top scorers, being the biggest winner.The 12 students, who found out their Diploma of Secondary Education (DSE) examination results this morning, along with more than 54,000 other candidates, scored top marks of 5** in seven subjects.Six of the 12 are super achievers, attaining top marks in an extended…