Question

what's wrong with the punctuation or capitalization Because none of Miss Hoover's friends know how to juggle they will have to attend clown school.​

Answer 1

I think it should be like this,

Because none of Miss Hoover's friends know how to juggle, they will have to attend clown school.

Explanation:

There is nothing wrong with the capitalization but you had to put a comma after the reason which is "Miss Hoover's friends don't know how to juggle.

Answer 2

Comma after juggle is the right answer