I personally think you have to aim and score much higher than be
sastified with yourself at your current level, i too as well was
dissappointed in my scores.
But at least i imaging myself
trying to get 100 marks out of 100 marks,so i studied real hard,
which luckily let to me at least passing my exams.
I not sure, but i think you dun have a second chance and thats
how life is. but regarding entering a higher education, ITE, poly,
junior college, most of them or the courses might say you need a
certain grade to enter like the most common criteria passing your
english.
I heard a lot of people saying that even if you did not pass or
make the grade, you can still try to enrol the school or the
course, because the criteria/ requirement is last year not this
year, this year, the school/course you are interested in might not
have as much people interested and enrolling in it, therefore
leaving you the vacancy.