You are lucky, here the uni was forced to add a year of extra study, things like english, remedial maths, remedial science and such basically to try to sort out the stuff that the mostly dysfunctional school system was supposed to have done.
They have good spots and bad, there are a few shade tree schools (literally a school with the only school furniture being the tree) that have good well motivated teachers ( and if you have dealt with the dept you will understand how hard those are to find) who teach the pupils and make them want to learn. Some have consistently had a close to 100% pass rate, and a high proportion who went to uni and succeed. This with the staff being about 10, and 1000 pupils, and with only a chalk board and donated paper and books ( still waiting for the delivery from the dept of the 2001 textbooks, real soon now they hope) as the only equipment. Toilets are a long drop and water is from buckets brought each day by the stronger kids.