yo mesaflying! best of luck with your cadet app. mate. btw i just noticed something i find quite surprising - you're 41 years old!
i honestly really don't know about this, but, do CX consider people that are as old as you are for their *cadet* program?
(or is that age false?
)
thanks
PS: capt_einz111 is right - secondary education is high school. if you would have written "did not attend college" in that section, you'd have probably pretty much blew it! 
haha (that actually might be somewhat true, btw, as imho it really is a bad misinterpretation of something that's actually supposed to be rather simple). but wait, you did eventually fill in that section with your high school results, right? 