In the movie, college restroom toilets are like what you would have in your home - attached to the floor with water tanks and removable covers - instead of the type used in public restrooms. I'm sure this was deemed necessary for the plot since characters used the toilet tanks to hide phones. But, the testing location was moved at the last minute so, how would they even know what the toilets were like in the building beforehand? They needed a more plausible place to hide the phones.
At the beginning of the movie, there is a scene showing Lynn calculating the cost of commuting to the private school she toured. The movie showed a pile of public transportation tickets that clearly are marked with a SEPTA logo, which stands for Southeastern Pennsylvania Transportation Authority. SEPTA runs in the Philadelphia metropolitan area. Half a minute later the movie identifies the city Lynn and dad live as Seattle.
At the beginning of the movie she calculated the cost of her commute, they show a pile of SEPTA(Southeastern Pennsylvania Transportation Authority) passes but immediately after it shows the movie is set in Seattle. As a Philly native it was noticed immediately.
The movie stars with Lynn being interrogated. A burner phone is put in front of her on the table and she claims it isn't hers. But the phone was used during the SAT test scam, which she wasn't caught doing.