In fairness it must be said that a hands-on exam is fairly stressful, but I do provide sample problems for practice. From half a dozen apps a student has to choose one. Within minutes I can tell who will do well: their level of anxiety drops. I can almost hear them think, oh this is like the other one, but with some differences.
I've come to expect that there will be a few students who'll rip through the exam about as fast as I can. Then there are a whole bunch who struggle a bit, but eventually get it. And then their are the others who were in class with their eyes open, but apparently didn't get it, didn't come for help, and don't get it, whatever that "it" might be.
Some will rip through the exam about as fast as I can. There will be a group which struggles and eventually get something close to right. And then there will be the others who were in class, with their eyes open, and don't seem to have a clue.
The students had to send me their app as an attachment in email. The timestamps says it all. Look at the gap after 3:56:
I try to have the students show me their app prior to submitting in case they overlooked a requirement or were on the wrong track. I've found it useless to have them call me over if they don't understand the problem. Those who don't understand the problem either don't realize that they're misinterpreting the instructions or they're in the sad contingent who're just waiting for a respectable time to leave.
There was one student, bored while waiting for me to give her app a once over, spent the time enhancing her app. The requirements for the app she chose only ask that she create an app which would allow the user to choose a club and display the name of the club and the maximum occupancy. The "listpicker" looked normal.
The results didn't. I can honestly say that I enjoyed grading here app and gaving her full credit.
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