It is regrettable that they are relieving the teachers from teaching lessons. Even pre-recording a video of the day’s lesson would be preferable to expecting the students to learn it all by themselves. I suspect a lot of families at your high school are going to have to hire tutors next year, especially for subjects such as maths that build on prior year’s knowledge. You may want to find tutors early next year before the good ones get booked up.
Sorry it’s been such a disappointment for your uni student as well. In the States, there’s talk of students suing their schools for inadequate online coursework.
I also saw the latest pronouncement on reopening the secondary schools in June. Do you have any idea how that’s going to look with social distancing protocols?