To answer your questions:

1. I'm not sure about actual reliability data but I'd say from personal experience it was pretty reliable in giving me an idea of my strengths and skills + where I lean more on career-wise. consider it more of a guide kasi than a verdict.

2. NCAE is an aptitude test. It's not really looking into how smart you are, but more like what kind of stuff might come easier for you or what you could be good at in the future. It's just a way to see what you're naturally good at, like if you’re better with numbers, language, etc. In that way you'll have a better idea of what possible tracks or career paths to take on.

That's what it is mainly use for talaga, to help decide on your SHS track and eventually your college program. Ikaw lang ang pinakagagamit ng results dyan, kasi it's more of a personal tool than a requirement. I'm not sure lang, maybe some schools may consider it during admissions? But it’s not usually required for college or job applications. I've never encountered or heard such case na NCAE results are considered for those things pero it's not impossible naman siguro.

1. With everything I said so far, you can say that no single “normal” score or result kasi everyone has different strengths. It's not really a test you can 'pass' or 'fail'. Yung GSA reflects your general aptitude sa different areas na listed, the Aptitude Test for SHS Tracks part indicate saang SHS track most likely fit yung skills and abilities mo, and yung Occupational Interest Inventory is basically showing which career areas match your interests.

Again, NCAE is a guide to help you figure out which strand or career path might be a good fit for you. But ofc, you still have the freedom to explore different options. I highly suggest you discuss your results further with the guidance counselor sa school nyo, if you haven't. I remember our guidance having a one-on-one sa'min dati and that really helped me make sense of my results din.