As far as I can tell, the length is determined by how many questions the child gets right. The more questions right, the longer the test takes. I'm guessing DD spent about 20 minutes on the math portion this time.

In K, DD was crying because she was taking the test and was the last one finished. The other kids had left to their next subject, but she was still answering questions. When she looked up and realized she was the only one left, she thought she'd done something wrong. frown