My son wrote matric in 2015 and wanted to better h...

My son wrote matric in 2015 and wanted to better his Maths mark. I was given postive feedback and report's during his tutions. I was so confident with the fact that he was improving and then when he rewrote which was his last opportunity given the time he matriclated he got the very same mark he got in 2015...my son is devastated .