The area around my house is right on the edge of where the field met the forest originally. The house was built and the dirt/rock from digging the basement was used quite a bit in my front yard. There were also sections where it was field but mostly scraped down. The builder didn't do much. He used a rock hound to remove some of the surface rock (only 1/4" down from what I see) and then seeded. Since then I've been battling rocks at the surface and spotty grass at best. Last year I tried to reseed an area with little success. I used a landscape rake to remove the rock and grass from an area. It looked like decent dirt (mostly clay) left. I applied seed and straw in the fall. This year you can see that some came up, some didn't. After inspecting it, it's obvious that the area where I moved a lot of loose dirt is doing acceptably well but the area where I scaped and have only about 1/2" of loose dirt is not working. I've also put in a vegetable garden in the field. I did this by tilling down to 8". This area looks great.
This year I'm going to try a larger area by tilling down to 8", removing as much rock as I can with a landscape rake and flattening with a drag. I'm going to add as much organic matter as I can get my hands on. I'm also going to put in a sprinkler system.
I definitely learned that I need to loosen the dirt down to a fairly deep level to get the grass growing well.
Just my $0.02