In case you want to sink yourself into one of Robinne's books, check out The Dragon Slayer's Son series.
The Dragon Slayer's Son
They said Dad was a dragon slayer. They were wrong. Now I'm following in his footsteps. When Nathan's dad goes missing, presumed dead, Nathan is whisked away to the Alexandra School of Heroic Arts to train as his replacement. At school, Nathan and his new friends soon learn: Dragons are not what they thought. Neither is the schoolmaster, Claus Drachenmorder. And Nathan's dad might not be dead ... yet. Nathan and his friends decide to follow in his father's footsteps. Their goals: save the dragons and find Nathan's dad. To succeed, they need to escape from Drachenmorder's watchful eye and evade his henchmen. They also need to survive the dangers of the mountains, seek the aid of the dragons, and unravel an international ring of wildlife smugglers. If they fail, neither Nathan's dad nor the dragons will survive. And neither will they. This action-packed novel, the first in the Dragon Slayer series, has a diverse cast of characters that appeal to tweens and teens. If you like adventure with a dose of fantasy, this is the book for you.