No idea re the sex.
If you work with children I would either go with something so unusual that you probably haven't taught one or so popular that you will have taught lots with all personalities.
So, maybe:
Amelia, Olivia, Ava, Lily, Eva, Isabella, Jessica, Poppy, Isla
Aphra, Anoushka, Bronte, Christabel, Fenella, Jacinta, Kiki, Mala, Saffron, Verity, Xanthe, Zeryn
Noah, Isaac, Alfie, Alex, Ben, George, Harry
Christian, Flynn, Jolyon, Joaquin, Kester, Solomon, Tian