可以翻译吗

He was the headteacher of a school of boys between the ages of thirteen and eighteen.
他是一所为13到18岁少年提供教育服务的学校的班主任。
I know that he was a kind man because when I was young(and he was old),he gave me presents,and sat me on his knee,and told me stories.But I believe the boys at his school were afraid of him
我知道他是个善良的人，因为当我很小的时候（他的年龄已经很大了）他送给我了一些礼物，而且曾经把我揽在膝头，给我讲故事。但是我觉得他学校里的那些孩子们是害怕他的。