讀 RC 的小學生中文是否比 SJS 學生較好一點？

Since both are international school, both teaching all subjects except Chinese in Englih, both spending only one Chinese session each school day, do you think RC can really make a difference to the students' average Chinese level If yes, is the difference significant?

Any SJS parents here would you kindly share your experience of how to help your child learn Chinese out of school?

Thank you.