I have one year experience teaching a Pri. 5 Korean student, who came to Singapore for her education at the start of Pri. 5. She emerged top 3 for all subjects for her final examinations, namely English, Maths and Science.
Also, I have been consistently tutoring my younger brother, who is presently a Sec. 4 student at Hwa Chong Institution.
I am able to have tuition sessions on weekends, preferably in the day. I am flexible with the venue of the tuition sessions.
Although I'm currently a 2nd-year undergrad at NTU, be rest assured that your child's academic welfare would not be compromised (i.e. should our examination schedules clash, tutition sessions would still resume as per normal).