Archie Quilter was taken to hospital where he underwent surgery on a fractured skull and had 23 stitches on his head after being hit outside Pool Hayes Academy in Willenhall on May 12 at about 3.30pm.
His father, David Quilter, says he feels West Midlands Police has "forgotten" about them, and that it is only a matter of time before someone is killed on Pool Hayes Lane.
But officers said the incident had been fully investigated and regular speed checks were carried out in the area.
A West Midlands Police spokeswoman said: "The youngster did need hospital treatment and officers spoke to the driver of the car who had remained at the scene.
"Following further investigation it was found no offence had been committed.
"We do take the safety of our roads very seriously with our mobile speed reduction team carrying out regular speed checks across the area, including one on Wolverhampton Road West, Willenhall in the last few days."
Mr Quilter said: "It's going to be a matter of time before somebody is killed.
"If I don't do something now I'm never going to be able to forgive myself.
"The lady that lives on the corner heard the bang in her house and come outside to give first aid to my lad.
"Luckily my child didn't die, but he had a fractured skull and it nicked the blood vessel in his brain.
"Archie was discharged from hospital on Sunday, he's recovering at home. He has had 23 stitches in his head and had brain surgery, he was seriously injured.
"I have no information about it, it's like it didn't happen. We want help, we want closure.
"Parents are still double parking, something has got to change."
A spokesman for Pool Hayes Academy said: "We would like to express our condolences to Archie and his family for the painful time that they have experienced recently.
"As an academy, we work tirelessly to ensure the safety of all community stakeholders in relation to Pool Hayes Academy. At pivotal moments in the academy day when the roads surrounding Pool Hayes are at their busiest points, we ensure that our staff are deployed appropriately to support in ensuring the safe start and end of the academy day.
"We would take the opportunity to again urge parents and carers to park bearing in mind the safety of our students and giving consideration to our neighbours."
One ambulance was sent to the scene and took Archie to New Cross Hospital.