Bad influence off other children is the main point which someone else has already said but there is also exposure to diseases like conjunctivitis and may catch headlice etc.
But nursery schools are not as bad as we say, they are great and an advantage is that there are qualified teachers and childrens independence will improve as they are mixing with other children and being more socially involved.
But nursery schools are not as bad as we say, they are great and an advantage is that there are qualified teachers and childrens independence will improve as they are mixing with other children and being more socially involved.