Twelve-year-olds Stella Tan and Alexandrea Sia are best friends, classmates and straight-A pupils from Methodist Girls' School (Primary). But at home, they have very different lives.

Alexandrea has private tuition three times a week for Chinese, Math and Science, costing about $1,000 a month. She says tuition has helped improve her grades significantly.

Her mother, Dr Yeak Hwee Lee, agrees. All her four children have private tuition in at least one subject and she attributes their improved grades to tuition.

Stella however, maintains her grades without any additional help. Her two other siblings also do not have tuition. Stella's mother, Mdm Wang Wen Shiu agrees with Senior Minister of State for Law and Education Indranee Rajah that private tuition is not necessary in Singapore's education system.

RazorTV finds out how these two students manage to separately maintain A-grades, despite their different approaches.