"Hey, Gohan, I have a idea. Lets go to school!"
Gohan looked at you in befuddled silence, before asking "Why? We learn too fast for anything approaching a traditional school setting. Not to mention we can easily teach ourselves anything."
You smiled, and taunted "I'm not so sure about that. I found a school teaching a subject so tough, it'll take even you a while to learn what it as to teach."
Gohan frowned and asked suspiciously"And its an actual accredited school, not some school you made yourself?"
You nod. "Yep. It's considered the most prestigious school of its kind. Thousands of people try to enroll every year, but only a couple dozen get accepted."
He was still looking at you suspiciously. "And you are going to enroll too?"
"Of course."
He considers it for a moment, then sighs. "Fine, wasn't sure what to work on next anyways."
You smile, part one of your plan complete.
"You can't be serious." Gohan said in disbelief. Before you, a steam of kids slightly older than you were milling around a playground. The prestigious school you were talking about before, was a Kindergarten. Southern Transformation Kindergarten, also known as Shapeshifting Academy.
"I am. For you see, what they teach here is rather obvious. Among normal kindergarten things we obviously don't need, they teach Shapeshifting. Magical Shapeshifting." You emphasize, grin growing big. "You've so far neglected to learn magic, so this might take you a while. I bet a weeks worth of deserts it'll take you at least a month to master Shapeshifting. It takes these kids two years usually, so you only have to learn twenty-four times faster than them. Can you do it?"
Gohan rolls his eyes "I'll do it in a week. That desert is as good as mine."
You end up mastering Shapeshifting within a few days. It's really not all that complicated, learning to breath fire was harder than this. Gohan predicatably took longer, but you end up surprised by how long it is taking him. He shows barely any progress after a week, to his very visible frustration. After two, some kids try to comfort him, kids who were learning faster than him, which really didn't help his frusteration and he quickly dissappeared in a puff of power to work out his frustration above a desert. You actually zoomed by for a look and had fun watching the temporary second sun he made.
As the month deadline approached and he failed to make much progress at all, barely even able to begin to transform despite the fact that he's been working on it for hours everyday, trapping and terrifying the teachers to make them keep trying to teach him, you took pity and tried to help teach him yourself but he didn't seem to be able to understand even the basics of concepts and magic.
On the final day of the bet, you were feeling a bit glum. You won, but given Gohan's mood you can't even taunt him about it, which sucked most of the fun out of it. Just as it was about to be Dinner Time, Gohan burst into the room you were in behind you, mentally radiating satisfaction, and yelled "Gossard, look!"
You turn around, and were surprised to see not your brother, but some random kid. A kid with a very familiar smile on his face. They twisted their Ki, their Ki not Magic, and their body shifted turning back into Gohan. "I did it, without stupid magic! I win the bet!"
You were actually quite surprised he was able to make a Ki Technique that duplicated the effects of the spell so quickly, but you didn't let that stop you from smiling in return and pointing out. "Not quite. For you might recall, the bet wasn't just for you to learn how to Shapeshift, it was to learn their shapeshifting. With Magic. Something toddlers can learn faster than you."
As you spoke, the grin fell from your brothers face in such a wonderful way, before he burst. "Fuck Magic!"
"Gohan!" Momma's voice rang out, obviously having heard him, and his anger quickly gave way to dismay. You on the other hand were quite happy, you won the bet, and not only is Gohan now in trouble for swearing within ear-shot of Momma, you can lord your brothers magical shortcomings over him all you want.
