It depends on the university.
It depends on the high school, Some high schools have cosmetology courses and some do not. If cosmetology is a career that you'd want to take you would most likely need to take chemistry, math, English, and a business class. For more information visit the related link.
probably chemistry or biology or astronomy
Biology
Yes.Even some high schools offer this an an elective.
There are many cosmetology courses available online so long as you have basic knowledge of cosmetology from high school courses. ie. Globe University (Bachelor of Cosmetology Business)
animal science, canine science, or any class that as to do with animals or working with animals...
Any science class will be important.
The motto of Malatya Science High School is 'It is a privilege to be a Malatya Science High School graduate'.
Type your answer here... You don't have to graduate high school, but if you don't have your diploma then you will have to get a GED to enroll in a cosmetology school.
Take every science class available.
The motto of Manila Science High School is 'Science, Truth and Country'.
To become a hairstylist you will complete high school or earn your GED. After this you will need to successfully complete a cosmetology school.