I coached P5-P6 Science and English composition for about 1 1/2 years. Both students did well in their PSLE.
For a month, I taught English to a P3 boy from China. When I first started, he had an extremely limited knowledge of English, but was later able to converse quite a bit in English and expand his vocabulary. He moved to Yishun, and his parent recommended me to another friend of hers that lived nearby.
Currently, I am teaching English to that other boy from China (a friend of my previous student).