Curses are the Worst (Scared Silly #1)

More about the book

"When Regan, Sofia, Bennett, and Darius unfairly get put into detention, they know something is wrong. And they re right: This detention is far from ordinary. Their science teacher, Ms. Stein, believes that by using these kids DNA she can create an army of perfect students who have Sofia's smarts, Regan's heart, Bennett's likeability, and Darius's loyalty. Soon the clones are wreaking havoc around town and getting the real kids in trouble!"--Provided by publisher