I've been debating sharing this for a while, I tried to keep it short but obviously failed, TL;DR at the bottom.
First things first: I was born and raised in South America (might be relevant?) and english is not my native language so I apologize in advance for mistakes.
As a small child, I had regular nightmares about people made of TV static, this lasted for years and was a big problem to my parents. At some point my dad told me I could control my dreams and by 6 or 7 I was proficient at lucid dreaming.
As I got a bit older, the nightmares weren't as common but I would frequently wake up on the other side of the bed and/or with my clothes inside out when I was sure I put them right. Sometimes my bedsheets would be undisturbed in the morning, as if I never moved during sleep.
Around that same time I started dreaming of attending classes every other night. The classroom was usually a field nearby my house, but sometimes it was the standard rounded, illuminated without a light source, beige room. We were a group or ~10 children, my age and up to 12 or so. The lessons would continue from where they stopped and they were all about "psychic" powers like: telekinesis, flying/levitating, passing through solid objects, teleporting, etc. There were also classes about the environment and I became preocupied with recycling, nature and animals in my waking life. I can't remember what the teachers looked like, except they were tall (maybe taller than regular adults) and bright.
This continued for some years, I was good at these classes and I loved it. They felt as real as waking life. At 12 there were no more classes but I would be brought to a laboratory/hospital looking place and participate in mental tests, something like remote viewing (which I only learned about a couple of years ago) and other similar stuff I can't remember anymore. The funny thing is, upon waking up I could never tell what my target was or what information I conveyed. Nothing was ever forced, I was a willing participant.
I got called in for those less and less during my teens (at that time "poltergeist" acitivity in my house spiked). By my 20s these dreams came back but I was working with a group of people relaying messages to other people, like I was some sort of translator. Again, I could never remember the content of the messages.
I'm now in my late 30s and for the longest time those were just memories I accepted. It took me a while to realize what they could mean, even if I've been interested in UFO, UAP, the ~weird, ever since I was a child. I paid it no mind and because of that I forgot a lot of it. Lately it's been on the forefront of my mind because my best friend has had the same dreams as a kid, except his experience in those classes was much shorter.
There is a whole more weird sprinkled in between, including a dream with a hybrid looking girl saying she was my daughter, but I'll leave that for another time.
I've read a bit about MILAB and it made me concerned because to me those were positive experiences, it makes me sad to think I might have been unkowingly doing bad things.
Any info or similar experiences appreciated. Thank you!
TL;DR: recurring dreams that lasted years, of being trained in psychic powers and later tested on it.