I'm extremely p*ssed at my tuition kid's maths teacher.....
Apparently he taught them algebraic equations without first
teaching them the basic rules of algebra.
That is somewhat akin to making them read a French-language
novel without teaching them French first. Or making a toddler run a
race before he even knows how to walk.
So now I'm forced to do the teacher's job of teaching basic
algebra! 
you know why?
they do that because they KNOW students have tuition teachers
who will teach them the basics...
they skip the basics so that they can finish the bloody
syllabus..
cynical as it seems, this is what is going on in our schools
now... especially the "good" schools where even if the teachers
disappear for the year, the students will ace the exams