The 44-year-old singer and daughter of the late Elvis Presley has 3-year-old twin daughters, Harper and Finley, with husband Michael Lockwood.
However, she isn't ready to enrol them into the education system yet because she thinks they are too young to go.
Lisa Marie, who now resides in the United Kingdom after quitting America, wants to keep them at home and spend as much time with them as possible.
She said in an interview with BBC Radio 2: "I'm reluctant to send them to school. I don't want to shove them off to school so early. I'll wait till they're 5 or 6, as that's the age they start in the States.
"They start really early here and I'm stunned when I see the age range. I understand working parents need to do it but I don't want to lose them that quick. I'll go crazy when they all go to school as I won't know what to do!"
The star - who also has 23-year-old daughter Danielle and son Benjamin, 19, from a previous relationship - claimed that she loves living in Britain because the people are friendlier than in California, where she used to reside.
She said: "In California, the people are so self-absorbed. I lived in the same neighbourhood for 17 years and I don't think I met a neighbour.
"When I moved here I was getting notes and flowers and people reaching out to me and I just thought it was incredible. There's a quality of life over here that I needed and I just found it very refreshing.
"Some of the press snoops around the area, but the locals are pretty protective of me, which I really found charming as I'd never experienced that before."