I remember watching an animated TV show mid 2000’s where there was this teenage kid who could turn into a dragon. He kept his human form but gained abilities of a dragon. I very roughly remember this one episode where a whole bunch of dragons attacked the high school he was going to.
The TV show I’ve been searching for is called Firebreather. It was a cartoon on Cartoon Network I believe.
On the last day of the war between humans and Kaiju, a human woman named Margaret Rosenblatt and Belloc, the dragon-like Kaiju king, fall in love, and become parents to a hybrid son named Duncan.
Sixteen years later, Margaret and Duncan are moving into a new house as he prepares to attend a new school. However, Duncan fears that his Kaiju-like appearance and abilities will make him a target for bullies. At school, he quickly develops a crush on a popular girl Jenna and makes an enemy out of her ex-boyfriend Troy Adams. In biology class, Duncan befriends fellow outcasts Kenny and Isabel, the latter who happens to be a Kaiju-obsessed fangirl and develops a crush on him.
Sounds a lot like American Dragon: Jake Long. This show was on the Disney Channel, the character was able to transform fully into a dragon.
He could transform only some parts of his body, so that he could maintain a human form but have dragon wings or dragon claws. A complete list of his powers may be found here.