Very occasionally, when it is extremely cold and he is recovering from a cold or virus, you may feel that your son needs to stay indoors. You should talk to the class teacher, explain your concerns and try to come to an agreement over supervision. My daughter is 11 years old and will start secondary school soon. She recently started her periods. She seems to be stressed which I am sure is making her asthma worse.
Stress can be a trigger for people with asthma.
Changing schools can be a particularly stressful time for young people, especially as it often coincides with the beginning of puberty and periods in young women. Some young women do find that their asthma gets worse before their periods actually start. This usually settles down once their menstrual cycle becomes established. Visit your GP or asthma nurse with your daughter to discuss your concerns. They may increase her preventer medication for a while.