What are the challenges that children face when they start school?

I need a 3000 words essay using some external recourses from Google scholar and specific module materials which I will upload later on.
Introduction (400 words)
Discussion of attachment issues when children join larger peer groups and the school social structure. (600 words).
Discussion of how children’s resilience and risks that they have experienced might effect how well they can cope with starting school (600)
Discussion of the development of children’s thinking at the start of middle childhood (600) ?
Summary Section
Conclusion (400 words).