Since the stadium, I think, will be designed to train schoolchildren of all age groups, it is worth staying at the standard sizes.
For school grounds, this is from 50x70 to 60x90 meters. The standard portable grid is 2 (height) by 6 (width) meters.
Marks the field with lines of the same width. What markup should be:
For the school, fields suitable for playing in the format 8 by 8 or 7 by 7 people may be suitable. They are usually used for training 10-year-old boys. The size of such a field is 60 by 40 meters with a gate of 5 by 2 meters.
Is it better to focus on one thing and do exercises for one muscle group, or does he approach the issue in a comprehensive manner and a little bit for different groups?