Diploma in taxation


My son has just completed his 12th and secure 77% from commerce faculty. He was good in maths till 10th however when he took admission for 11th std he did not kept Maths instead he opted for secretarial practice. in 12th he secured 98 marks in Accounts. Now if he wish to pursue course in taxation wherein the criteria is ACCOUNTS / ECONOMICS & MATHS are mandatory subject. Is there any possibility he could be able get an admission on his 10th grade marks (he got 92 marks in SSC). Need your guidance. regards