Don't choose Engineering grads, university students, and after A/L students as your teachers. Choose someone who has graduated from the specific subject they are going to teach you. Example- For Physics select someone who has a B.Sc Physics (Special). For Chemistry select someone who has a B.Sc Chemistry (Special). I have no idea about Bio.

Trust me Engineering grads, university students, after A/L students can't teach you Physics and Chemistry. All of them are highly dependent on the knowledge they have gained during their A/Ls. So their quality depends on their A/L teachers.

The Engineering grads have only practical knowledge. They don't have theoretical knowledge. To learn theory you have to find someone with theoretical knowledge. Engineers are trained to solve real-life problems not to teach someone.

I don't know how university students are doing tuition classes with the tight schedules they have got. They are ruining their career themselves and they are going to ruin yours too. But they don't know that. They think they are helping නංගිලා මල්ලිලා while earning money.

After A/L students are the same as the university students. After A/L students doing A/L classes is one of the weirdest trends I have ever seen. I don't know how these trends start. In the near future, grade 6 students (After ශිෂ්‍යත්ව students) will also start doing ශිෂ්‍යත්ව classes.

I have worked with these groups and they ruined my 1st shy. Choose someone who has graduated from the specific subject they are going to teach you.