Q: A neighbor that has repeatedly called the police on us for random events like parking in front of his house along the ci

A: Based on the details provided, it does not appear your son's rights were violated in this instance. A few key points:

- Parking on a public street does not create any reasonable expectation of privacy, even in front of one's own home. As such, the police would not typically need a warrant or consent to visually inspect a vehicle parked on a public street.

- The police do have the authority to investigate reports of environmental hazards or violations, such as an oil leak. If they have a report of a leak, they can follow up to determine if there is an issue that needs to be addressed.

- While at school, students have reduced expectations of privacy, and school officials have some discretion to cooperate with police investigations. If the teacher asked your son, and he voluntarily consented to letting them inspect under the hood, then there would not be a 4th Amendment issue.

- However, a search that is overly intrusive or extended, especially without parental notification, could potentially raise legal issues. From your description though, it sounds like they briefly inspected to follow up on the reported leak and that was the extent of it.

If this neighbor continues to harass your family or make false police reports, you may be able to seek legal recourse against them. But based on these facts alone, the police appear to have acted legally in conducting a brief investigation into the reported leak.