Prayer in School

Dinner time, my family and I sit down to eat. But before we do we bow our heads and thank the lord for our food. Is this wrong? I was raised in a Christian family; my grandfather is a preacher, and all my family are Christians. My first day in kindergarten I sat down to eat lunch, I bowed my head and began to pray when I heard two kids laughing at me. I finished saying my prayer, and asked them what they were laughing at. They said I was weird, and stupid for praying.
That evening I asked my mom why they called me weird. She replied "some people do not believe in praying or in god".…