But do please explain how a teen will be disadvantaged from not doing official school work at the moment? is that a serious question? This isn’t a weeks holiday. Your child may not go back to school until September, so March-July he would have learnt nothing on the curriculum.
A. He will have learnt some of it
B. It wouldn’t matter if he hadn’t. Schools don’t cover things once then never mention them again. They revisit them several times.
C. He will have learnt other things that aren’t on the curriculum.
I watched my dc playing in the garden today. They are a range of ages, primary and secondary. They played a game seeing how high they could throw a ball in the air. So they covered forces, gross motor skills (which are essential for writing as much as anything else), pivot, recoil, estimating, averages, fair testing, variables, etc etc.
They also cooperated, communicated, negotiated, built relationships, used language.
They built a pulley system. More of the same. Engineering, design, materials, maths, measuring, calculating, adjusting, communicating, used descriptive prose.
Learning doesn’t have to look like sitting at the table doing a worksheet.
If the goal is to pass an exam, it’s going to depend largely on the dc being motivated anyway. You can lead a horse to water but you can’t make it drink. You can sit a teen in their bedroom on google classroom but you can’t make them revise. That’s going to be the same in or out of school.