"Anything above 70% is just showing off," says a pilot on a forum to a student pilot who is trying to better his scores on practice tests to something above 85% consistently.
On one hand, I can see trying to ease the student's mind that he/she will pass with the scores the way they are. I totally understand there are people who just do not do well on tests, even when they do know the subject matter. Students need all of the encouragement and support they can get. A student pilot doesn't need to stress for a 100% on their written test, an 85% is fine. If they want to do even better, that's great in my opinion!
On the other hand, it irks me to no end when people denigrate the sincere efforts of others who are trying to excel. Just showing off?! It's showing off to get more than 7 out of 10 correct on a test that is trying to gauge your knowledge of the things that you need to know in order to safely fly?
Who do you want to teach you how to fly? someone who goes for 70% on the written and accepts doing just enough to check the box as good enough? or do you want someone who takes the time to demonstrate they have the required knowledge of learning and the subject matter knowledge to teach. Lets say you learn from that 70% CFI. The questions he missed on his knowledge test are likely to be the ones that he won't teach you, or won't teach you correctly.
It is true, whenever you miss any questions on the written tests, your CFI has to review the "areas of deficiency" with you and make sure you've learned what you missed. However, I believe the guy that is totally ok with a 70% score isn't too concerned about learning what he missed. The student pilot who is striving for better than 85%. He's a different story. I am pretty sure he will learn from his mistakes on the written and be a better pilot as a result.
[Sidebar: To be completely honest, it surprises me the FAA doesn't have a tighter standard on the written tests for CFIs than private, commercial and instrument pilots. How can we teach what we don't know? Aren't we the ones responsible to create those safe pilots the flying and non-flying public need?]
It was ironic seeing this exchange just days after I finally completed my first pass (of three) going through one of the study books for the CFI written test. After completing the first pass I know I could easily pass the written with a score better than 70%. However, that first pass also exposed some areas of knowledge I'm weak in. If I were that 70% pilot I'd go, take the test and merrily walk away with those knowledge areas left weak.
I'm not a 70% pilot and definitely will not be a 70% CFI. I am going to fill those knowledge gaps and get a much better than 70% score. It will take extra work, and it means that I won't be taking the written before then end of the year like I wanted. That's OK. I like showing off!