Pre JAR written examinations
Historically with the CAA when penalty marking was used, you lost 1/3 of the value of the question for an incorrect answer in the NAV block papers, and 1/2 in the TECH block papers.
Pass mark 70%. Cannot recall the deduction in the associated papers - the performance paper, usually perf A; and was it loading as well??
Latterly besides stopping the penalty marking and increasing the passmark to 75%, the "associated papers" went, and were absorbed into the main blocks.
Options tech exams such as: gas turbines, AC electrics became part of engines and electrics.
Still having to jump through the hoops, and the amount you will really need to retain in small.