Unlike Mary’s little lamb who followed her to school one day, this little lamb was born there.

But he was certainly not expected to make his home in the classroom.

Sam the lamb was rejected by his mother and is now being hand-raised by teachers and students at Uralla Central School on the NSW Northern Tablelands.

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With his cool, calm and collected personality, Sam is melting the hearts of everyone he meets.

“He’s just really relaxed all the time,” one student said.

And just like Mary’s lamb, he’s a follower.

“He’s a great little lamb, he follows you around and just wants to be there with you,” another student told 7NEWS.

“He goes wherever you go.”

Sam had a tough start to life. Born on Sunday at the school’s agricultural farm, his mother decided his twin needed more attention.

Teachers discovered the abandoned little baby alone in the paddock.

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Sam the lamb was abandoned by his mother but quickly adopted by students at Uralla Central School in NSW. Credit: 7NEWS

“It was really sad, he was wailing about a bit,” teacher Jessica Burton said.

“I was a bit worried, there was a mum who just forgot he had existed.

“He was following me, not the mums.”

While the school has more than 18 ewes to teach students about the wool industry, bringing Sam into the classroom to be cared for has brought a whole new meaning to agriculture studies.

And it seems Sam is loving his entire class of new “mums” who are taking care of him, feeding him formula and giving him plenty of pats.

He’s even taken to falling asleep on their laps.

Students are feeding Sam and he is even falling asleep on their laps in class. Credit: 7NEWS

Sam is proving to be an excellent classroom companion.

“I think the context of Sam makes him special, he can be utilised on so many levels — whether it’s a kid having a hard time and just needs some quiet time,” agriculture teacher Louise Upjohn said.

“Just seeing the kids so calm knowing there is a baby around surprised me really,” Burton added.

“They have all been really excited but also really respectful.”

Students of all ages from kindy to Year 12 are falling in love with Sam.

“Little Sam the lamb is very, very popular, very, very famous, very, very liked at this point in time,” principal Brad Hunt said.

While he loves hanging out with all the students, Sam will be introduced back into the flock at the farm over the next few weeks and will become a part of the school’s agricultural program.

“When he requires less feeds what I am hoping to do is reintroduce him back over to the rest of the flock and go back in that program where we will be preparing those lambs for comps next year,” Upjohn said.