Hello, Those 21/42 represent the national average for the LNAT this year, while 16/42 is the result your son received. There is no pass mark; however, universities judge the LNAT MCQ mark differently. Some place heavy concern on it, such as KCL and UCL, while others regard it less and look more at the essay part of the LNAT. Its up to the University your son joins to view his results as enough.