I think I understand your query.
1.) I am not at all familiar with Tae Kwon Do politics in the Philippines but here is the contact info for the current WT General Secretary:
WT Philippines
2.) I suggest you research the Kukkiwon. This is the governing body for 'organized' or 'official' TKD in Korea and throughout the world with National Associations in nearly every country. World Taekwondo is an equal/near equal body within the same governmental entity (yes, it gets confusing). In a nutshell, World Taekwondo (WT), is responsible for the sport side and Olympic endeavors of TKD. Kukkiwon is responsible for everything else, including black belt promotions. To make things more confusing, you will see the old acronym WTF stilled used frequently. The 'F' was dropped around 15-years ago for obvious reasons.
Again, I am not familiar with the accreditation process for being a physical education teacher, but I can certainly see where an accredited, traceable certification would carry weight. For this I strongly suggest you discuss getting her blacks belt certificate(s) via Kukkiwon. This may require her to change schools to accomplish. A conversation you would need to have with her current instructor. Be very aware that there are a LOT of knockoff certificates floated around from schools all over the world. To find out if a school is associated with KKW/WT, you can do a school query on the
Kukkiwon or
Tcon websites. Membership is required for the Tcon site. Once again, it can get confusing.
3.) Changing schools can be messy sometimes, but overall I find most schools look at a persons history and how similar it is to the new schools curriculum. This largely involves the form set(s) used and sparring rules. That said, it is very, very common for any instructor to add their own material to their curriculum. This is were nearly every school is unique. A very good thing IMHO. Yes, there are some 'lemming' schools that follow a purely WT/KKW curriculum, but I can tell you without exception, it is an incomplete curriculum intended to be augmented by the local school/system. There are more than a few reasons for this that would take too long to explain in my already long post.
Usually, a new school will keep a transfer student at their current rank until they catch on any new or different curriculum or technical differences and then continue down the normal promotional process.
4.) I am former LEO. Martial arts experience alone May carry a small amount of weight. But if it is purely as a student (never as an instructor or school owner), I would not expect a great deal from it. An interview may flesh out any experiential value. Military experience, education specific experience, and relationships swing a bigger hammer. I do not say this to dissuade, but as a general rule, law enforcement officials know little to nothing about the martial arts so they have no way to gauge a persons experience and subsequent value relative to a LEO. Does it look good on a resume? Usually, but again, the proof is in the pudding and that is not something that is easily covered in an interview or job application unless there are some major benchmarks to discuss.
Circling back to question #2, based on your intent I feel your best bet is do talk with her current instructor, see if the current school is part of Kukkiwon, and get Official Kukkiwon certificate(s). That said, in no way does having a KKW certificate automatically make her training any better or worse. She could have received elite level training, far better than the average KKW/WT school, or far worse. I just have no way of knowing.
I wish you and your daughter the best going forward.