Maybe, it depends on if your license request is accepted. Some states laws and regulations differ in that.
No, a felon cannot become a private investigator in Oregon even 15 years after the felony conviction. A private investigator must have a clean record without any felony convictions.
After the training, you should focus yourself with getting a job. Since you got private investigator training, you might become a police investigator.
No formal education is necessary to become a private investigator. However, a bachelor's degree in criminal justice or law may prove useful in becoming an skilled private investigator.
If by investigator you mean a private investigator, you do not need any particular qualifications. A lot of retired policemen tend to become private investigator, so some skills in detection would be needed.
There are several places you can study to become a private investigator. One such place is the Detective Training Institute - why not visit their website: www.detectivetraining.com
Hire a Private Investigator in the UK
Prior experience in the field is always a plus in the area of private investigators. No formal experience is required however to simply become a private investigator.
Several different colleges offer classes to become a private investigator. Some examples that I found are Boston University, Louisiana State University, and University of Washington.
A person can find information on how to become a private investigator in many different locations. A person could first contact their state licensing department. One could also read the private investigator magazine. Some websites a person could look at are PI Now, PI home website, and linked investigation.
Try academies or institutes run by private investigators.They know better about what training a private investigator should possess. Or find if the sponsoring company is still active in the industry and choose it.
Becoming a private investigator is a long path, make sure that you really want to become one before starting. This website may help you to make your decision: http://www.nig.co.uk/Investigator-Training-and-Job-Opportunities.aspx
The best source for private investigator training is at private investigator academy or at a local university that has the program. Those are the best sources.