Conversation so far:
What did Ayumi Hamasaki do in Ayumi Hamasaki's childhood that's of importance?
Born in Fukuoka Prefecture, Hamasaki was raised as an only child by her mother and grandmother.
Her father had left the family when she was three.
Why did he leave?
CANNOTANSWER.
What were some of her early endeavors?
At age seven, Hamasaki began modeling for local institutions.
Where did she model?
for local institutions, such as banks, in order to supplement the family's income.
Was she successful?
She continued this career path by leaving her family at fourteen and moving to Tokyo as a model under SOS, a talent agency.
Her modeling career did not last long.
Why didn't it last?
SOS eventually deemed her too short for a model and transferred her to Sun Music, a musicians' agency.
Did she work with anyone of note?
From August 1995 to March 1996, Hamasaki also co-hosted the SoundLink "magazine" Hokago no Osama (After-school King) for the Nintendo Satellaview.
What else did she do while co hosting?
Growing dissatisfied with her job, Hamasaki quit acting and moved in with her mother, who had recently moved to Tokyo.
What did she do after she moved in with her mother?
While living in Tokyo, she attempted to further her studies at Horikoshi Gakuen, a high school for the arts, but dropped out in the first year.

Question: Why did she drop out?
Self-contained rewrite: Why Ayumi Hamasaki drop out of high school her first year?