In November 2017, the Associação Brasileira do Sono published a Manifesto ( access here ) , clarifying how sleep deprivation at the beginning of puberty and adolescence strongly impairs learning and school performance.

Inspired by the Manifesto published by ABS and by the American movement called Start School Later (What is starting school early?), a group of mothers in the Federal District, led by psychologist Virgínia Nogueira, started a movement to make families aware of the importance of of the school grade change. The psychologist conducted an online survey on the opinion of parents regarding the beginning of classes. Almost all those responsible for the students chose to change the class schedule to eight-thirty in the morning.

The movement has already started to show results in the DF. Some private schools are studying the possibility of changing the start of classes to eight-thirty in the morning, as recommended by the Brazilian Sleep Association.

The number of schools with high school classes starting at half past eight in the morning may increase in the Federal District and Brazil, as the Chamber of Deputies can vote on a bill that establishes this change in public and private schools across the country.