The following table provide the actual Singapore O level Additional and Elementary Mathematics grades of my students who took the 2007 Singapore GCE O level examinations.
| Name | School | A Maths | E Maths |
| Period and type of lessons | Comments |
| Edwin | Bowen | A2 | A1 | 6mth( Group) | ||
| Fit | Bowen | A2 | A2 | 6mth( Group) | ||
| Jeevan | St Gabriel | A2 | A1 | 2 Years (1 to 1) | ||
| Jiayu | Bowen | A1 | A2 | 6mth( Group) | ||
| Joshua | Bowen | A1 | A1 | 6mth( Group) | ||
| Maha | St Margaret's | B3 | B3 | 1 Year (1 to 1) | ||
| Navin | Christ Church | B4 | B3 | 3 Months ( 1 to 1) | ||
| Nicholas | Bowen | B3 | A1 | 6mth( Group) | ||
| Sophia | Bowen | B3 | A2 | 6mth( Group) | ||
| Stanley | Bowen | B3 | B3 | 6mth( Group) | ||
| Wanwen | Bowen | B3 | B3 | 6mth( Group) | ||
| Weijie | Bowen | B3 | A2 | 6mth( Group) |
Why is it that 50% of your students get B3 you say? Because I have only 20 plus lessons with them. The group lesson students all started 1 week before their Sec 4 midyear exam. All except one failed their midyear. The one who passed just barely passed. Practically everyone got a B3 or better. Sure it is not excellent but surely it means my methods work reasonably well, doesn't it? I must admit if I had pushed harder, it would have been better. 
The B4 dude have less than 20 lessons. His improvement was from what his school teacher deem to be sure fail... so I ain't ashamed of that B4. Not a miracle but pretty decent I would say.
Students who started in Sec 4 and who were failing in Sec 3 usually have acquired bad habits who have to be unlearned. With sufficent monitoring, it is not an issue. BUT when you have time for only a single lesson per topic... it is unlikely all the bad habits can be successfully remedied.
I said 80-90% of students who started in Sec 3 have A1 or A2 right? Actually it is closer to 100%, but once in a while, I have students who are unable to attain A1 or A2 due to whatever reasons...
