Intern – This is a position for someone without the work experience AND without the completed schooling to do the work required in the position they are interning for. You are paying a lower wage (still at or above your State's minimum wage, but marginally lower than your new hires, due to the trade off of you providing free hands-on experience with the desire to make them an attributing employee in the field later on.
You can only be an intern as long as it takes to learn the job and complete the schooling or degrees required specifically for that position. Once they have completed the required schooling for the position, they are no longer an intern, but are now entry level.
Entry level – This is a position for someone who has the knowledge of the work (classes, degree, training, etc.) But does not have the work experience.
You are only entry level for as long as it take to learn the ropes of the position. Once they are working at full speed, understand the work, and can complete it on par with other full time employees, they are no longer entry level.
You are NOT hiring entry level if you are looking for applicants with the required schooling completed, and work history in the same field of longer than it takes to learn the position.
Addtionally, interns pending only fulfillment of required schooling that have now completed the degrees or training required, and are able to work at the positions speed are also by default no longer entry level.
Position title – Any person that has the required schooling and the ability to do the work outlined now has the title of the position they are in. Their pay is not deduced because “they trained” in your company. Their pay is equal to other peoples in the same position. Their work is not worth less because you helped them, you were already “paid back” for that by paying intern salaries.
Senior position title – This is a person that has done the position they are in for years. The years vary due to your position's specific scope of work. The understanding of “Senior” means they have come across the full scope of work in their position multiple times and are able to make decisions in line with your company's guidelines. Some jobs this may be 3 years, some 5. No job however takes more than 10 years to be at senior level employment.
Depending on your position's work, if you are hiring at or above the aforementioned work experience relative to your job's level of senior understanding. You are now hiring a senior level employee in that position and will need to pay a salary of such.
Management – if the position requires the employee to coordinate, review, or train other employees, it is by default a management position. It may be an assistant manager, but it is still management.
If you are hiring someone that need to keep track of someone else for you in any way… you are hiring and need to provide a salary for a manager.
If you are hiring someone to keep track of others AND have a senior level of experience relative to the position, you are hiring Senior Management and need to pay as such.
To reiterate at a very basic level.
There is no such thing as an “Entry level” position requiring all needed schooling to be complete, and 3 years or more of professional work experience in the specific field you are hiring in. You are not hiring an entry level person, you are just showcasing you are a bad employer to work for.
I'm happy to explain this more in detail to any employers if you are still confused.