BRAGGING IS ALWAYS A BAD IDEA
ALWAYS ALWAYS ALWAYS.
(okay unless you’re writing a resume)
There are so many more interesting things to say. Funny things. Stupid things. Clap your hands and bark like a seal for all I care (actually half the time that might even be your best option).
Your parents are the only people who benefit from hearing about your achievements. As social skills go, this is something you should master.