Books like Monster Blood

Having a 10-year-old son in the house, These Horrorland books are really handy to have...It is a cool book the main charter is called monster but he is not a monster. His teacher and principal are acutely monsters trying to take over earth and monster and his friends try to stop her but monster gets turned into a monster with some special eggs that the teacher tries to feed to the school after that he gets turned back halfway with the help of his friends but the teacher has a small army of monsters, monster still has monster arms a defects the monsters.