The actor - who made his debut on the cobbles in 2003 - said: "You'd have a minimum of three hours tutoring per day, you'd finish on set and then you'd go off and do your school work.
"I felt a big weight off my shoulders when I didn't need tutoring anymore. Being there 15-16 years it's bizarre really.
"I suppose it's not an ordinary upbringing but I was very lucky with my family, my mum and dad, and as well though Corrie itself, everybody there is so normal and down to earth."
And Sam admitted that when he went for his first audition for the soap, he wasn't nervous because he didn't "understand the magnitude" of the show.
Sam AstonGood to be back working with my big sis @jenniemcalpine @coronationstreet
He added: "I got the audition for Corrie, but no [I didn't realise how big it was]. I was nervous but I think if I was to do it now, I'd be like 'Oh my goodness' because it's massive.
"You don't understand the magnitude because when you're eight or nine years old because I was just doing something I enjoyed."
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