School teacher

National average salary: ,497 per year

Primary duties: School teachers prepare a lesson plan and learning materials for a group of students in a classroom. They assess each student's performance and academic development. School teachers also grade assignments, assign homework and administer tests.

Flight attendant

National median salary: ,760 per year

Primary duties: Flight attendants guide passengers to their seats on an airplane. They educate them on safety measures, perform a safety check before a flight, greet passengers and prepare and serve snacks, food and drinks to a flight's passengers.

Physical therapist

National average salary: ,831 per year

Primary duties: Physical therapists diagnose a patient's movement dysfunction. After identifying their needs, they develop a treatment plan and teach them specific exercises to help with their diagnosis. Physical therapists may also massage their patients to aid in healing and alleviate any pain.

Nurse practitioner

National average salary: 0,621 per year

Primary duties: Nurse practitioners are advanced practice registered nurses who determine a patient's needs, diagnose diseases, develop treatment plans and perform both laboratory and diagnostic tests. They also prescribe medications as needed, record a patient's symptoms and perform physical exams.