There would have to me some sort of test to gauge whether or not they know enough about how the government works in the first place to be eligible. Being halfway through high school, it would be another reason they may stress out and it may not be good for their health overall. It would also cause a divide between those who can vote early and those who can’t as well as use up more resources to administer these tests across the country. Once a teen is 18 years old, they have already learned a good amount of life skills, lived through some political issues and are old enough to understand some issues that are affecting their families directly and can enable them to vote for a change. Students younger than 18 are still trying to get themselves through schools,enduring the overall stress of maturing, or may be unaware of the full extent of some issues their families are having at