Is this a good way to begin a story?

Rachel Pearson, aged thirteen, was walking to school. She waved a hand through her long dark brown hair as she turned a corner and saw a young man in her class ahead of her. He was dressed, as usual, in his white shirt, and as he turned round on hearing her approach, his navy school tie with yellow stripes, she saw, neatly tied. Today he had on a pair of smart grey flannel trousers, instead of his usual black ones, fastened with a brown belt. His name was Peter Bumby. He was tall for his age and heavily built. Rachel glanced down at his polished black shoes and then up again at his long legs. She was so transfixed that she had forgotten to speak, and was startled when he greeted her, rather awkwardly, “Good morning Miss Pearson.”
“Good morning Mr. Bumby,” she replied, smiling. “Mister Bumby,” she continued, “you’re wearing grey trousers today.”
“Yes,” Peter replied.
“They’re very smart,” said Rachel, “are they new?”