Original: Most boys attending the school move on to Westminster School after the completion of either Common Entrance or Scholarship examinations (The Challenge), although a number of boys each year go onto other schools, most typically either Eton or Harrow.
Simplified: Most boys attending the school move on to Westminster School after the completion of either Common Entrance or Scholarship examinations (The Challenge), although a number of boys each year go onto other schools, most often either Eton or Harrow.