Waec results and the interview
In 2010, a friend of mine's sister won the lottery and her highest level of education is SSS.Unfortunately she had F=Fail in mathematics meanwhile she had sat for waec private candidate the previous year to better the maths.So she was awaiting results meanwhile her interview date was due but she had to show up for the interview, in fact in that year the released of the result delayed.
When she went for the interview, the CO made it clear to her that with the F=fail in maths she doesn't qualify to receive a visa but the minimum grade is E=pass.So she was given the time to submit the results when it is released by WEAC.Unfortunately for her when the results were released she again had F=fail in maths.In fact they tried to tamper with the results to make F=fail look like E=pass meanwhile the embassy had already cross check with WAEC upon the released of the results.She was therefore denied the visa.
If you have F=fail in your results then you are not save especially in the six major core and elective subjects.In fact to be save there shouldn't be F=fail in your results.