STAMFORD-While two female students were fighting as the Academy of Information Technology and Engineering was letting out Thursday afternoon, police said they had to arrest the mother of one of the girls. Sgt. Simon Blanc said Student Resource Officer Carl Franzetti called for backup at 2 p.m. after the two girls squared off in the front of the school on High Ridge Road as buses were picking up the kids. The Stamford mother of one of the girls, Dollie Thompson, 35, began approaching the school security guard and began yelling at the person as the girls were in the midst of a physical altercation, Blanc said.