Visible crew/equipment: As Sam and Rhonda have Fiona's car confiscated, when Fiona runs out shouting, "I can pay for those parking tickets!" the crew's black mat is laid out on the walkway, but in the overhead shot when she tries to run away that mat is gone. (Visible on fullscreen DVD.) (01:28:10)
Continuity mistake: When Carter is splashed as the twins jump into the pool, only one side of his head/hair is wet. In the next shot, all of his hair is wet. (00:56:50)
Visible crew/equipment: When David and Ryan force Austin to sit on the bench and meet the bachelorettes (with 'Dating Game' music playing), the white actor's mark is visible on the ground before Austin covers it with his foot. Also, when David introduces bachelorette 1, then bachelorette 3 and after Mrs. Wells says hi to Ryan, the green actor's T-mark is visible at David's feet. (Visible on fullscreen DVD.) (00:57:20)
Continuity mistake: At Rhonda's house, when Sam says, "You sure do have a knack for taking something simple and making it beautiful," the red bowl is beside her. After Rhonda shows Sam the white gown, the camera pans back toward the table top and the lace mask suddenly and deliberately appears and is leaning against the bowl.
Continuity mistake: When Austin is typing to Sam from his bedroom, the very first book on the shelf in the background keeps changing, over and over again. This occurs near the start, when they are still unknown to each other, and also when he tries to write to her after the pep rally incident.
Visible crew/equipment: When Rhonda's in the kitchen with Bobby, and she tells him that it's enough with all the salmon dishes, as the camera zooms in we can see the crew member (wearing a pouch at his hip) with his arm up, at the left of the screen, as he's presumably holding up the boom pole and mic.
Visible crew/equipment: When Austin is putting up the Cinderella fliers at school, just as he tells David and Ryan, "The phone's locked. I keep getting messages like...," the red actor's mark is visible on the floor behind Austin and the white actor's T-mark is visible on the floor behind Ryan. (Visible on fullscreen DVD.) (00:53:20)
Visible crew/equipment: While Sam tries to beat Fiona back to the diner, Fiona and her girls walk into the diner, and when Fiona walks behind the counter, the actor's white T-mark is visible on the floor under the counter, in front of Eleanor's skates.
Answer: Yes, this happens in most schools. The reason is that students are more likely to pay attention to announcements that are not made by a boring school employee. In many American schools, we have a phenomenon known as "home room". This is a short period usually first thing in the morning that is non-instructional when announcements are made, forms are filled out, and administrivial functions that don't have anything to do with any one class. At schools that don't have this, they have a thing called "study hall" or "independent study" which is a period where you sit in a classroom and work on your assignments, special functions for the school admin. like you are talking about are frequently done at these periods by students who are "working in the office" rather than studying. Then, there are schools that actually have classes in journalism, broadcasting, etc. where this activity would be part of the schoolwork.
Myridon