My old Media Productions teacher.
He was an old man, but that was pretty much the only thing about his age that really showed. He was really passionate, but not only that, but a caring teacher, as well. He always used to be super amazed at my typing skills and constantly remarked that I would be a great court stenographer one day. Sometimes, I still wonder to this day what my life would be in an alternate timeline if I had followed his recommendations to the letter and used my typing skills to my advantage. At the time though, I never really thought much of it and kind of dismissed it as an old man's ramblings somewhat, as I wanted to do something bigger and better rather than spending my life typing shorthand. I dunno.
iirc he had to leave teaching come my 10th or 11th grade year and I was damn sad. While ultimately I had no interest in pursuing a career in the media industry, I'll never forget his expertise and insight into what it's like to be both in front of the camera and behind it and working behind the scenes tech stuff.
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I feel like my situation may be pretty odd here because I don't think a lot of my teachers have had any sort of groundbreaking impact on me whatsoever. Media Productions teacher was impactful in an emotional sense because he was super encouraging and supportive, but I was pretty much on my own when it came to figuring out an overall career path that I wanted to follow. Unfortunately, this has caused pretty much 90% of the teachers that I've had to be pretty much a hazy memory at this point. They've only really done the bare minimum and not really much more than that.