Hi, I wonder if anyone out there has any experience with the type of Econs teaching Hwa Chong JC has for their students?

My Sec 2 son is thinking of trying for RA History. I heard that it will be good if he can prepare for it. May I know if anyone has any suggestion as to what he may do to increase his chance please? He is not in GEP and not particularly bright. His main interest is in war history, but it is not very relevant right? Thanks in advance