Ruth Furlong wrote in a post: "There really are some truly decent kids out there!
"A year 11 lad came over to them all asking how their first day went? He spots a new kid crying because he's gotten on the wrong bus and it's getting further away from where he lives.
"'It's ok mate, don't worry, you'll be home soon' he told him. He whipped out a tenner and arranged for a taxi to pick him up at the next bus stop and made sure he got home safe."
Tom's sister Katie replied to the post saying: "Ahhh everyone, it was my little brother. We are so proud and it's so lovely to know he's a good lad in the outside world.
"The school rang our mum and left a lovely message. All your comments are so so lovely they've had us all close to tears, Tom will hate all the attention."
Tom's father, Kenny, told the Liverpool Echo he was proud of his "thoughtful and caring" son.
"He is a very thoughtful lad and has a great personality.
"He didn't tell me what had happened until later in the night when he realised people were talking about it on Facebook.
"He just said he was on the bus asking the Year 7's how they had got on, on their first day and he noticed this kid sat on his own, looking anxious and upset and asked him was he okay.
"The boy said he had got on the wrong bus and was getting further and further away from home so Tom thought on his feet, told him to get off the bus and gave him £10 for a taxi."
Matthew Symes, headteacher at Holy Family, said: "It is just lovely and at the start of the year it really sets the tone for everyone else.
"Tom is an incredibly thoughtful and all-round good guy…. He was just pleased the boy had got home safe. He has set a great example in front of a whole bus of year sevens, who have all that worry and anxiety about the bigger kids.
"It is a brilliant example of the older pupils looking out for them."