Smartphone applications are designed to be addictive and have demonstrably negative effects upon the mental health of adolescents. Their usage should be vigorously discouraged by anyone who cares about the mental health of school students.
As I recall, many divey bars would settle for "sibling." As a teenager in Illinois I heard tale of a mythical land to the North where we could drink in restaurants with our parents.
https://docs.legis.wisconsin.gov/statutes/statutes/125/I/07/...
It is quite illegal to furnish alcohol to minors
>All states also make it a crime to supply an underage person with alcohol even when there is no money involved.
https://www.criminaldefenselawyer.com/resources/criminal-def...
And:
>Depending on the situation, one can be charged with a misdemeanor or a felony for supplying alcohol to minors. Most often, supplying alcohol to a minor is considered a misdemeanor offense, but in some jurisdictions, it may be considered a felony depending on the circumstances. Felonies for supplying minors with alcohol are typically charged when there is some type of accident or injury involved with the use of alcohol or the person supplying the alcohol has been convicted of repeated offenses. Typical penalties are outlined below.
> For the purpose of this section the word ''furnish'' shall mean to knowingly or intentionally supply, give, or provide to or allow a person under 21 years of age except for the children and grandchildren of the person being charged to possess alcoholic beverages on premises or property owned or controlled by the person charged.
https://malegislature.gov/Laws/GeneralLaws/PartI/TitleXX/Cha...
Not a great analogy, since the effects on alcohol are quite different than the effects of using a smartphone.
Only in the past several years, and in that time there's been a lot of pushback to it and a growing consensus that it is likely harmful when people don't moderate their usage. I was in high school less than 10 years ago, and phones of all kinds were banned. If a teacher saw an iPhone, it would be confiscated and your parent would have to pick it up.
The schools are optimizing for convenience and cost, not the cultural zeitgeist.