Name two things that happened in Chapter 13 that proves Max is smart in freak the mighty?

Although Max still will not talk in front of the class, Mrs. Donelli is able to determine that Max is learning and when talking one-on-one with her can provide the correct answers to test questions.

The reading skills tutor, Mr. Meehan, is pleased with his progress and Max's test results provide evidence that he is not disabled or dyslexic at all.