A private coeducational school famous for offering high-quality practical classes. - Students, regardless of gender, learn about health and physical education by using each other's bodies as practice materials. - Differences in the bodies of men and women, such as the penis, breasts, and female genitalia. - Mechanism of ejaculation. - How pregnancy works. - Using their real dicks and pussies, teachers and students demonstrate sexual intercourse in front of everyone. - Her body, which she has never shown to her father or mother, is carefully observed, and a finger is inserted into her vagina to spread the mucous membranes. - Her genitals, including her urethra, were blowing in the wind and becoming cold.