I can’t pray on time since im in school as a teacher

السلام عليكم I’m a teacher and I spend most of the day in school , my problem is that I can never pray duhr or 'asr at the time of the azan , I have to always wait for another hour when I will a 10 minutes break and pray . My question is : is it possible For me to pray duhr and 'asr together during the 10 minutes break ? Even though it will be after the duhr prayer and before 'asr prayer