Recording performances once or twice a week, is an excellent method of “Performance practise” – for students who have very few opportunites to perform.
Dealing with pre-performance nerves is something every young piano student needs to learn to do and this gets easier with practise.
“Performance practise” needs to be a part of the students practise schedule – maybe once or twice a week, in the weeks leading to a performance.
Playing for family or friends helps students get used to performing. An excellent way to practise performing, is to record your performance – just one run-through of a piece or a section of a piece even, the way you would play if you were performing…no trials or repeats.
Then, listen to your recording – where you did good and where you faltered. Practise to improve the weak spots, and do another recording after a week.
Setting up a private youtube channel is an excellent idea and kids often work, because they want recordings to be put up there regularly, for family and friends to watch.
Here’s an interesting article, which has a section on performance practise : The three stages of motor learning by Dr Noa Kageyama