It was a peaceful day in Dragon Land. Quetzal was talking to his student's parents about their kids. Seeing a the happily married couples with children reminds him constantly the marriage he used to have. Being that dragon's mate for life, he has had no sex life since he lost his mate. Given that as the children are now of age. He's decided to teach them sex ed, Quetzal decides to use the opportunity to force one of his students to be his mate, The next day at class Quetzal enacts his plan. "I believe it's time to teach you little ones about mating." He's already got a female in mind. Seeing Cassie his favorite dragon cub he calls her to help with demonstrating. Nervously Cassie walks up to Quetzal and waits for her instructions. Quetzal picks Cassie up and places her on his lap. "To begin with this" he says as he spreads open Cassie's legs "is a vagina, also called a pussy, It what females have." "And this" he said spreading her pussy lips. "Is a hymen, it means she is a virgin. Females that haven't mated have these," Quetzal says. Cassie blushes as her private area is being seen by her friends. And this" he said as he points to his growing member; "is a penis it's what boys have." "And to mate you put your penis inside a girl's vagina. But first you must make sure your partner is ready." Quetzal says as he starts rubbing his length against Cassie's lips. Cassie lets out cute moans as her young inexperienced pussy is rubbed against an adult Dragon's member. "Once she is wet enough you insert your penis like so," he said as he lifts Cassie up and slowly lowers her onto his length. He only gets a few inches in before he reaches a blockage. " Remember for girls it hurts at first they mate, but the pain will soon fade." Quetzal says as he applies pressure to Cassie's hymen. Soon the membrane gives way allowing Quetzal to push deeper into the smaller female. Quetzal covers Cassie's mouth with his hand to muffle her scream. With his free hand he uses his fingers to gently rub Cassie's clit, slowly replacing the pain with pleasure. Once she starts moaning in his hand he lets go of her mouth. Quetzal pants as this is the first female he has been with in ages. Quetzal starts with a slow rhythm to allow her small body to adjust to his large member. Quetzal groans as her tight walls grip him each time he pulls out. Seeing the children fidgeting from arousal Quetzal gets and idea. "Feel free to practice with each other," he says to the horny children. Immediately some of the females spread their legs revealing their damp slits. Seeing the invitations, the boys pounce the girls and start mating. The room is soon filled with the sounds and smells of sex. Quetzal smiles at the sight of the mating young ones. Cassie gasps as Quetzal goes harder with his thrusts. Soon he reaches the entrance to her egg chamber. Cassie lets out a cute squeal as she reaches her first orgasm. Quetzal groans as her already tight walls grip him like a vice when she came. "That my children was a female orgasm," he says between pants as he nears his limit. "And this is a males orgasm." As he says that he slams Cassie down his length pushing past her loosened cervix and unloads his pent up cum into her fertile egg chamber. Feeling warm seed flooding her womb Cassie hits an even bigger climax. Spraying their crotches with her juices. This was too much for her and she soon passes out. Quetzal smiles at Cassie's belly as it continues to swell with his seed. He knows from her scent that she is fertile. Already millions of dragon sperm are swimming towards her vulnerable young eggs. Soon after the children all reach their limits. Girls cumming as the boys fill their young fertile wombs with life giving egg making seed, "Next week's lesson will be about egg laying," he said as he gently rubs Cassie's swollen belly. Already he can feel eggs starting to form. "And i will see you after class, my mate" he whispers to the unconscious dragoness.