One difference between past school and modern school is of course the students, our parents generation has almost nothing in common with our generation, everything has changed. We can talk about the technology, who had had a major impact on the nowadays teenagers. Our grandparents did not have the opportunity to have lessons explained on the computer, as we have. Another difference will be the dress code, for example my mother had to wear a uniform, the girls were not allowed to paint their nails, or to put make-up on.
